scholarly journals Domestication reduces phenotypic plasticity in chaya (Cnidoscolus aconitifolius (Mill.) I.M. Johnst)

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Miguel A. Munguía-Rosas
Keyword(s):  
Phenotypic Plasticity ◽  
Artificial Selection ◽  
Stem Elongation ◽  
Light Availability ◽  
Wild Plants ◽  
Cultivated Plants ◽  
Phenotypic Traits ◽  
Shade Avoidance ◽  
Leaf Production ◽  
Cnidoscolus Aconitifolius

Background: Natural selection optimizes phenotypic plasticity in plants found in environmentally variable habitats. However, it is unclear how artificial selection has affected the phenotypic plasticity of crops. Reduced plasticity in crop yield is often considered a desirable feature in cultivated plants; however, limited phenotypic plasticity in this and other traits may also affect the ability of crops to cope with environmental variation. Study species: Wild and domesticated chaya (Cnidoscolus aconitifolius (Mill.) I.M. Johnst). Question: How domestication has affected the phenotypic plasticity of vegetative traits in response to the light environment? Methods: Leaf area, leaf perimeter, leaf specific area, leaf production, trichome density, stem elongation, growth in stem diameter and slenderness were measured in clones of wild and domesticated plants. These clones were allocated to two contrasting light treatments: fully exposed to sun vs. placement beneath a shade cloth. The phenotypic traits and reaction norms were compared between the genotypes of wild and domesticated plants. Results: Lower plasticity in leaf production and slenderness was observed in the domesticated compared to the wild plants. Leaf production and slenderness are associated with the shade avoidance syndrome, which was evident in wild plants but not manifested in domesticated plants. Reduced plasticity in leaf production also suggests yield stability. Conclusion: Artificial selection reduces phenotypic plasticity in the yield of chaya and in its response to variation in light availability.

scholarly journals Effect of domestication on phenotypic plasticity in chaya (Cnidoscolus aconitifolius (Mill) I.M. Johnstone)

2021 ◽  
Author(s):  
Miguel A. Munguía-Rosas
Keyword(s):  
Phenotypic Plasticity ◽  
Artificial Selection ◽  
Specific Area ◽  
Leaf Traits ◽  
Light Environment ◽  
Wild Plants ◽  
Shade Avoidance ◽  
Leaf Production ◽  
Cnidoscolus Aconitifolius ◽  
Leaf Specific Area

Abstract It is widely recognized that phenotypic plasticity may increase the survival of plants in environmentally variable habitats. However, the manner in which artificial selection affects the phenotypic plasticity of crops is poorly understood and there is no previous study in clonally propagated crops. The goal of this study was to assess the effect of domestication on phenotypic plasticity in leaf traits, growth rates and allocation patterns, under contrasting light environments, in the clonally propagated crop chaya (Cnidoscolus aconitifolious (Mill) I.M. Johnstone). Leaf area, leaf perimeter, leaf specific area, leaf production, trichome density, growth in height, growth in stem diameter and slenderness were measured in 97 clones belonging to 20 genotypes (10 wild and 10 domesticated). The clones were allocated to two contrasting light environments: fully exposed to sun vs. placement beneath a shade cloth. Reaction norms for each trait were compared between wild and domesticated clones. Results suggest that domestication and light environment had a non-additive effect on phenotypic plasticity in leaf production and slenderness. Reduced plasticity in these traits was observed in domesticated plants compared to that of their wild relatives. Leaf production and slenderness are associated with the shade avoidance syndrome, which is evident in wild plants but not manifested in domesticated plants. Reduced plasticity in leaf production also suggests yield stability, since the leaves form the edible part of chaya. I conclude that artificial selection reduces phenotypic plasticity in the yield of chaya and in its response to variation in the light environment.

scholarly journals Changes in Reproductive Traits in Physalis philadelphica; An Unexpected Shift Toward Self-Incompatibility in a Domesticated Annual Fruit Crop

2021 ◽  
Vol 12 ◽  
Author(s):  
Lislie Solís-Montero ◽  
Lorena Aceves-Chong ◽  
Mayumi Vega-Polanco ◽  
Ofelia Vargas-Ponce
Keyword(s):  
Artificial Selection ◽  
Reproductive Strategy ◽  
Evolutionary Process ◽  
Pollen Grains ◽  
Fruit Production ◽  
Wild Plants ◽  
Cultivated Plants ◽  
Self Incompatibility ◽  
Reproductive Parameters ◽  
Crossing Experiment

Domestication is an evolutionary process with an impact on plant reproduction. Many domesticated plants are self-compatible (i.e., they lack mechanisms to reject their own pollen), but few domesticated plants are fully or partially self-incompatible. We used the husk tomato, Physalis philadelphica, as a study model to investigate changes in the reproductive strategy of an annual partially self-incompatible plant during the process of domestication. Wild and cultivated populations of this species coexist in close proximity. These different populations present a high level of morphological and genetic variation associated with different degrees of domestication. We hypothesized that artificial selection favors self-compatibility in cultivated plants through changes in their reproductive strategy and some reproductive parameters associated with domestication. To test this hypothesis, we characterized the floral morphology and some reproductive parameters of weedy plants (wild plants), landraces (semi-domesticated plant), and commercial plants (domesticated plants). We conducted an artificial crossing experiment, germinated the seeds, and recorded seedling growth. Commercial plants had the largest flowers and the highest number of ovules. Yet, they did not differ in other reproductive parameters (e.g., herkogamy, size of pollen grains, stigmatic area, and pollen:ovule ratio) from landraces and weedy plants. Physalis philadelphica produced fruits by autonomous autogamy in the artificial crossing experiment. These fruits were the smallest and lightest fruits at all degrees of domestication; however, fruit set of autonomous autogamy was higher in weedy plants. In addition, fruit production was higher when weedy plants donated pollen to commercial plants. Although seeds produced by autonomous autogamy of weedy plants had a low germination percentage, their cotyledons and the embryonic foliage leaves appeared earlier than in landraces and commercial plants. In conclusion, the domestication syndrome in this plant was manifested as increments in flower size and ovule production. Contrary to expectations, there was higher fruit production by autonomous autogamy in weedy plants than in cultivated plants. It seems that artificial selection in P. philadelphica favors self-incompatibility in cultivated plants. Nonetheless, spontaneous self-pollination seems to be advantageous in weedy populations because they produced viable seeds from which cotyledons and the embryonic foliage leaves emerged earlier than in cultivated plants.

scholarly journals Does Green Really Mean Go? Increasing the Fraction of Green Photons Promotes Growth of Tomato but Not Lettuce or Cucumber

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 637
Author(s):  
Paul Kusuma ◽  
Boston Swan ◽  
Bruce Bugbee
Keyword(s):  
Leaf Area ◽  
Stem Elongation ◽  
Wavelength Region ◽  
Sole Source ◽  
Dry Mass ◽  
Leaf Expansion ◽  
Photon Flux ◽  
Shade Avoidance ◽  
Crop Species ◽  
Blue Region

The photon flux in the green wavelength region is relatively enriched in shade and the photon flux in the blue region is selectively filtered. In sole source lighting environments, increasing the fraction of blue typically decreases stem elongation and leaf expansion, and smaller leaves reduce photon capture and yield. Photons in the green region reverse these blue reductions through the photoreceptor cryptochrome in Arabidopsis thaliana, but studies in other species have not consistently shown the benefits of photons in the green region on leaf expansion and growth. Spectral effects can interact with total photon flux. Here, we report the effect of the fraction of photons in the blue (10 to 30%) and green (0 to 50%) regions at photosynthetic photon flux densities of 200 and 500 µmol m−2 s−1 in lettuce, cucumber and tomato. As expected, increasing the fraction of photons in the blue region consistently decreased leaf area and dry mass. By contrast, large changes in the fraction of photons in the green region had minimal effects on leaf area and dry mass in lettuce and cucumber. Photons in the green region were more potent at a lower fraction of photons in the blue region. Photons in the green region increased stem and petiole length in cucumber and tomato, which is a classic shade avoidance response. These results suggest that high-light crop species might respond to the fraction of photons in the green region with either shade tolerance (leaf expansion) or shade avoidance (stem elongation).

scholarly journals Atlas of the Baltic languages: plant names of Slavonic origin

2015 ◽  
Vol 37 ◽  
pp. 499-513
Author(s):  
Ilga Jansone ◽  
Anna Stafecka
Keyword(s):  
Solanum Tuberosum ◽  
Wide Area ◽  
Wild Plants ◽  
Cultivated Plants ◽  
Achillea Millefolium ◽  
Small Scale ◽  
Cherry Tree ◽  
Centaurea Cyanus ◽  
Plant Names ◽  
The Baltic

Atlas of the Baltic Languages: Plant Names of Slavonic OriginThe article investigates Slavonic-derived plant names in dialects of the two surviving Baltic languages – Latvian and Lithuanian. Historically, these Slavonisms were originally adopted by small-scale regional dialects, which are now disappearing. In 2009, a pilot study for the Atlas of the Baltic Languages was published. It comprised 12 geo-linguistic maps with Latvian, Lithuanian and English commentaries. 2012 saw the publication, in CD format, of the Atlas’s first volume: Lexis 1: Flora. The material analysed concerns names for: (1) wild plants, e.g., cornflower, nettle, waybread, milfoil, dandelion, plantain; (2) cultivated plants, e.g., onion, potatoe, garlic, cucumber, Swedish turnip, [winter] wheat; (3) trees (juniper, hazel-tree, pear-tree, plum-tree, cherry-tree, etc.) and words related to a tree (top of the tree, cone, etc.).Borrowed plant names can generally be grouped as follows: 1. Common borrowings located in a wide area in Lithuania and used all over Eastern part of Latvia – the region of Latgale. These usually denote fruits and vegetables, e.g. the potatoe (Solanum tuberosum) – Latv. buļve and its variants, buļba and variants, uļbiks / Lith. bulvė and variants, bulbė and variants; or garlic – casnags, casnāgs and variants / Lith. česnākas, šešnākas and variants. 2. Common borrowings located in wide area in Lithuania and used in some subdialects in Latgale, e.g. Lith. vosilka / Lat. Vasilka ‘cornflower (Centaurea cyanus)’; Lith. kriváunykas and variants / Lat. kravavņiks and variants ‘yarrow (Achillea millefolium L.)’. 3. Slavonisms whose origin differs in Latvian and in Lithuanian, e.g. Lat. klevers (< Russ. клевер, Bel. dialectal клéвер, клевiр / Lith. kaniušina < Bel. канюшына, Pol. koniczyna for ‘clover (Trifolium)’.The Atlas of the Baltic Languages, reflecting the language contacts, could be an important source for further investigation not only in Baltistics but also in Slavistics and Indo-European comparative linguistics.Атлас балтийских языков: названия растений славянского происхожденияВ статье рассматриваются названия растений славянского происхождения в диалектах единственнo живых балтийских языков – латышского и литовского. Исторически эти славянизмы были заимствованы региональными территориальными диалектами, которые в настоящее время исчезают. В 2009 г. был опубликован пилотный проект Атласа балтийских языков, включающий 12 геолингвистических карт с комментариями на латышском, литовском и английском языках. В 2012 г. первый том атласа: Атлас балтийских языков. Лексика I: Флора – был опубликован в формате CD. Связанную с растительним миром лексику представляют названия, обозначающие: 1) дикорастущие растения – например, василек, крапиву, подорожник, тысячелистник, одуванчик, 2) культурные растения – например, лук, картофель, репу, (зимнюю) пшеницу, и 3) деревья (можжевельник, орешник, грушу и др.), а также части деревьев (макушку дерева, шишку). В качестве основных групп заимствованных названий растений можно выделить: 1. Общие заимствования, которые встречаются в широком ареале в Литве и во всей восточной части Латвии – в Латгалии. Обычно это названия овощей и фруктов, например, картофеля (Solanum tuberosum) – лат. buļve и вар., buļba и вар., uļbiks / лит. bulve и вар., bulbe и вар., чеснока: лат. casnags, casnāgs и вар./ лит. česnākas, šešnākas и вар. 2. Общие заимствования, которые встречаются в широком ареале в Литве и в некоторых говорах Латгалии, например, лит. vosilka / лат. vasilka ‘вaсилёк (Centaurea cyanus)’, лит. kriváunykas и вар. / лат. kravavņiks и вар. ‘тысячелистник (Achillea millefolium L.)’. 3. Славянизмы несовпадающего проиcхождения в латышском и литовском языках, например, лат. klevers (< рус. kлевер, бел. диал. клéвер, клевiр) / лит. kaniušina < бел. kанюшына, поль. koniczyna ‘клевер (Trifolium)’. Атлас балтийских языков отражает языковые контакты и служит важным источником для дальнейших исследований не только в балтистике, но также в славистикe и индоевропейском сравнительном языкознании.

scholarly journals Stem photosynthesis: new evidence highlights the contribution of phenotypic plasticity to the invasion success of Mikania micrantha

2020 ◽  
Author(s):  
Jin Zheng ◽  
Tai-Jie Zhang ◽  
Bo-Hui Li ◽  
Wei-Jie Liang ◽  
Qi-Lei Zhang ◽  
...  
Keyword(s):  
Phenotypic Plasticity ◽  
Plant Species ◽  
Invasive Plant ◽  
Stem Elongation ◽  
Invasion Success ◽  
Invasive Plant Species ◽  
Alien Plant ◽  
Mikania Micrantha ◽  
Stem Photosynthesis ◽  
Wide Range

Phenotypic plasticity affords invasive plant species the ability to colonize a wide range of habitats, but physiological plasticity of their stems is seldom recognized. Investigation of the stem plasticity of invasive plant species could lead to a better understanding of their invasiveness. We performed a pot experiment involving defoliation treatments and an isolated culture experiment to determine whether the invasive species Mikania micrantha exhibits greater plasticity in the stems than do three native species that co-occur in southern China and then explored the mechanism underlying the modification of its stem photosynthesis. Our results showed that the stems of M. micrantha exhibited higher plasticity in terms of either net or gross photosynthesis in response to the defoliation treatment. These effects were positively related to an increased stem elongation rate. The enhancement of stem photosynthesis in M. micrantha resulted from the comprehensive action involving increases in the Chl a/b ratio, D1 protein and stomatal aperture, changes in chloroplast morphology and a decrease in anthocyanins. Increased plasticity of stem photosynthesis may improve the survival of M. micrantha under harsh conditions and allow it to rapidly recover from defoliation injuries. Our results highlight that phenotypic plasticity promotes the invasion success of alien plant invaders.

scholarly journals PERANAN TUMBUHAN LIAR DALAM KONSERVASI SERANGGA PENYERBUK ORDO HYMENOPTERA

2016 ◽  
Vol 10 (2) ◽  
pp. 195
Author(s):  
Erniwati Erniwati ◽  
Sih Kahono
Keyword(s):  
Flowering Time ◽  
Food Resources ◽  
Wild Plants ◽  
Cultivated Plants ◽  
Applied Study ◽  
Insect Pollinators ◽  
Cultivated Plant ◽  
Dry Seasons

The role of the wild plants in relation to the conservation of the Indonesian insectpollinators was studied at several areas of Java. Three of direct observationmethods were applied: study of biodiversity and observation on the wild flowersand the insect pollinators as well, and the behaviour of the insects. The flowersof wild plants were relatively smaller and paler in colour, however they were moreattractive to insect pollinators than cultivated plants. Flowering time of the wildplants was mostly during wet seasons, contrary to that of the cultivated plantswhich was mostly during dry seasons. Our observation indicated that these wildplants are the food resources of insect pollinators during wet seasons. Observationdata support the importance of wild plants to supply food to insect pollinatorsduring wet seasons. Management of wild and cultivated plant environments isnecessary to conserve insect pollinators.

scholarly journals Diversitas Tumbuhan Liar Pada Lahan Jagung (Zea mays L.) di Desa Bungbungan Kecamatan Bluto Kabupaten Sumenep

2020 ◽  
Vol 6 (1) ◽  
pp. 54-60
Author(s):  
Khoiratul Hasanah ◽  
Ari Hayati ◽  
Hasan Zayadi
Keyword(s):  
Zea Mays ◽  
Agricultural Land ◽  
Zea Mays L ◽  
Crop Yields ◽  
Diversity Index ◽  
Diversity Indices ◽  
Wild Plants ◽  
Wild Plant ◽  
Cultivated Plants ◽  
Number Of Individuals

Wild plants are plants whose presence on agricultural land can reduce crop yields. Losses due to wild plants to cultivated plants vary depending on the type of plant cultivated, climate, species of wild plants and technical cultivation applied. This study aims to determine the diversity of wild plants in the land of maize (Zea mays L.) in Bung-bungan Village Bluto District Sumenep Regency. This method uses a descriptive exploratory method, for each wild plant found in ± 3600 m2 of corn land. Sampling of wild plants using a 4x4 m plot method. The measured data includes the number of species and the number of individuals calculating important values ​​and diversity indices. The results of the study showed that the Shannon-Wienner Diversity Index analysis of the highest value in maize plants in plantations was found in land II, which was 2.678 indicating moderate diversity, categorized as moderate because there were not too many wild plants on maize.  Keywords: Corn, diversity, wild plants,  ABSTRAK Tumbuhan liar merupakan tumbuhan yang kehadirannya pada lahan pertanian dapat menurunkan hasil tanaman. Kerugian akibat tumbuhan  liar terhadap tanaman budidaya beragam bergantung dari jenis tanaman yang diusahakan, iklim, jenis tumbuhan  liar dan teknis budidaya yang diterapkan. Penelitian ini bertujuan untuk mengetahui diversitas tumbuhan liar di lahan jagung (Zea mays L.) di Desa Bung-bungan Kecamatan Bluto Kabupaten Sumenep. Metode ini menggunakan metode deskriptif eksploratif, terhadap setiap tumbuhan liar yang ditemukan pada lahan jagung seluas ±3600 m2. Pengambilan sampel tumbuhan liar menggunakan metode plot berukuran 4x4 m. Data yang diukur meliputi jumlah spesies dan jumlah individu menghitung nilai penting dan indeks diversitas. Hasil penelitian menunjukkan analisis Indeks Keanekaragaman Shannon-Wienner tumbuhan liar nilai tertinggi pada tanaman jagung di lkebun terdapat pada lahan II yaitu 2,678 menunjukkan keanekaragaman sedang, di kategorikan sedang karena jenis tanaman liar yang ada pada lahan jagung tidak terlalu banyak. Kata kunci: Jagung, Diversitas, Tanaman liar

scholarly journals Human fascioliasis infection sources, their diversity, incidence factors, analytical methods and prevention measures

Parasitology ◽  
2018 ◽  
Vol 145 (13) ◽  
pp. 1665-1699 ◽  
Author(s):  
S. Mas-Coma ◽  
M. D. Bargues ◽  
M. A. Valero
Keyword(s):  
Preventive Measures ◽  
Wild Plants ◽  
Cultivated Plants ◽  
Contaminated Water ◽  
Prevention Measures ◽  
The Past ◽  
Urban Markets ◽  
Human Fascioliasis ◽  
Questionnaire Surveys ◽  
First Time

AbstractHuman fascioliasis infection sources are analysed for the first time in front of the new worldwide scenario of this disease. These infection sources include foods, water and combinations of both. Ingestion of freshwater wild plants is the main source, with watercress and secondarily other vegetables involved. The problem of vegetables sold in uncontrolled urban markets is discussed. Distinction between infection sources by freshwater cultivated plants, terrestrial wild plants, and terrestrial cultivated plants is made. The risks by traditional local dishes made from sylvatic plants and raw liver ingestion are considered. Drinking of contaminated water, beverages and juices, ingestion of dishes and soups and washing of vegetables, fruits, tubercles and kitchen utensils with contaminated water are increasingly involved. Three methods to assess infection sources are noted: detection of metacercariae attached to plants or floating in freshwater, anamnesis in individual patients, and questionnaire surveys in endemic areas. The infectivity of metacercariae is reviewed both under field conditions and experimentally under the effects of physicochemical agents. Individual and general preventive measures appear to be more complicated than those considered in the past. The high diversity of infection sources and their heterogeneity in different countries underlie the large epidemiological heterogeneity of human fascioliasis throughout.

scholarly journals Genome-Wide Detection of Selection Signatures in Duroc Revealed Candidate Genes Relating to Growth and Meat Quality

2020 ◽  
Vol 10 (10) ◽  
pp. 3765-3773
Author(s):  
Jian Yu ◽  
Pengju Zhao ◽  
Xianrui Zheng ◽  
Lei Zhou ◽  
Chuduan Wang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Artificial Selection ◽  
Fast Growth ◽  
Phenotypic Traits ◽  
Sequencing Data ◽  
Selection Signatures ◽  
Protein Coding ◽  
Pig Genome ◽  
The Difference ◽  
Fast Growth Rate

With the development of high-throughput genotyping techniques, selection signatures in the genome of domestic pigs have been extensively interrogated in the last decade. The Duroc, a major commercial pig breed famous for its fast growth rate and high lean ratio, has not been extensively studied focusing on footprints of intensively artificial selection in their genomes by a lot of re-sequencing data. The goal of this study was to investigate genomic regions under artificial selection and their contribution to the unique phenotypic traits of the Duroc using whole-genome resequencing data from 97 pigs. Three complementary methods (di, CLR, and iHH12) were implemented for selection signature detection. In Total, 464 significant candidate regions were identified, which covered 46.4 Mb of the pig genome. Within the identified regions, 709 genes were annotated, including 600 candidate protein-coding genes (486 functionally annotated genes) and 109 lncRNA genes. Genes undergoing selective pressure were significantly enriched in the insulin resistance signaling pathway, which may partly explain the difference between the Duroc and other breeds in terms of growth rate. The selection signatures identified in the Duroc population demonstrated positive pressures on a set of important genes with potential functions that are involved in many biological processes. The results provide new insights into the genetic mechanisms of fast growth rate and high lean mass, and further facilitate follow-up studies on functional genes that contribute to the Duroc’s excellent phenotypic traits.

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