Rust fungus Puccinia recondita in Zailiysky Alatau (Kazakhstan)

2020 ◽  
Vol 19 (1) ◽  
pp. 60-65
Author(s):  
Г. Сыпабеккызы ◽  
Y. V. Rakhimova ◽  
B. D. Yermekova ◽  
L. A. Kyzmetova ◽  
U. K. Jetigenova ◽  
...  
Keyword(s):  
Intermediate Host ◽  
Host Plant ◽  
Rust Fungus ◽  
Coniferous Forests ◽  
Puccinia Recondita ◽  
Main Host ◽  
Elymus Caninus

38 samples of Puccinia recondita were collected on the territory of Zailiysky Alatau, 22 samples werefound on intermediate host-plant, where spermagonia and aecia are developed, and 16 samples were found on the mainhost, where uredinia and telia are formed. Puccinia recondita is mostly observed on the leaves and petioles of Atragenesibirica and Aconitum leucostomum in the form of aecia and on the leaves and sheaths of Elymus caninus in the form ofuredinia and telia. In the intermediate host-plant, the number of Puccinia recondita samples is steadily increasing from1198 m to 2240 m a. s. l., on the main host, there are two sample occurrence’s maxima: at an altitude of 1153–1400 m(steppe) and at an altitude of 1700–2288 m a. s. l. (dark coniferous forests and meadows). Most often, Puccinia reconditais found on the territory of the Zhetyzhol ridge, and in the Turgen, Prokhodnoye, and Big Almaty gorges.

Molecular and virulence diversity and linkage disequilibria in asexual and sexual populations of the wheat leaf rust fungus, Puccinia recondita

Genome ◽  
1998 ◽  
Vol 41 (6) ◽  
pp. 832-840 ◽  
Author(s):  
J Q Liu ◽  
J A Kolmer
Keyword(s):  
Leaf Rust ◽  
Rust Fungus ◽  
Field Population ◽  
Puccinia Recondita ◽  
Wheat Leaf Rust ◽  
Asexual Population ◽  
Sexual Population ◽  
Linkage Disequilibria ◽  
Wheat Leaf ◽  
Virulence Diversity

An asexual field population and a sexually derived population of the wheat leaf rust fungus, Puccinia recondita, were examined and compared for diversity and linkage disequilibria between virulence and molecular phenotypes. Isolates in both populations were tested for virulence to 20 Thatcher wheat lines near-isogenic for leaf rust resistance genes, and for random amplified polymorphic DNA (RAPD) variation using 10 DNA primers. In the asexual field population, 36 virulence phenotypes and 14 RAPD phenotypes were identified in 43 isolates. In the sexual population, 87 virulence phenotypes and 79 RAPD phenotypes were identified in 104 isolates. Linkage disequilibria was less in the sexual population compared to the asexual field population. Virulence-RAPD phenotype pairs (110 in total) were directly compared between the two populations for association. In the asexual population, 39 virulence-RAPD phenotype pairs were associated (P < 0.05), compared with 18 pairs in the sexual population. Linkage was not evident, as some residual disequilibria remained between virulence and RAPD phenotypes. In the asexual population 18 RAPD phenotype pairs were associated, compared with 9 pairs in the sexual population. The sexual population was also tested for RAPD variation with an additional six primers. In the sexual population, amplification sites of four different primers were tightly linked which indicated a chromosomal segment in P. recondita may not readily undergo recombination. Disequilibria between virulence and RAPD phenotypes in field populations of P. recondita in Canada is maintained by asexual reproduction.Key words: Puccinia recondita, molecular diversity, virulence diversity, linkage disequilibria, wheat leaf rust.

scholarly journals First record of Ophraella communa in Hungary (Coleoptera: Chrysomelidae)

2020 ◽  
Vol 81 ◽  
pp. 73-79
Author(s):  
Dávid Horváth ◽  
Márk Lukátsi
Keyword(s):  
North America ◽  
Host Plant ◽  
Plant Protection ◽  
First Record ◽  
Leaf Beetle ◽  
Ambrosia Artemisiifolia ◽  
Main Host ◽  
Potential Problems ◽  
Ophraella Communa ◽  
First Time

Ophraella communa LeSage, 1986, a leaf beetle native to North America, is recorded for the first time from Hungary. Several specimens were found on a degraded meadow in the outskirts of Budapest. Its importance in suppressing its main host plant, common ragweed (Ambrosia artemisiifolia L.), is shortly discussed, as well as the potential problems it can cause in plant protection. With 5 figures.

scholarly journals First records of the invasive box tree moth Cydalima perspectalis (Walker, 1859) (Lepidoptera: Crambidae) in south-eastern Poland

2017 ◽  
Vol 60 (2) ◽  
pp. 101-106
Author(s):  
Jarosław BURY ◽  
◽  
Tomasz OLBRYCHT ◽  
Krzysztof MAZUR ◽  
Paweł BABULA ◽  
...  
Keyword(s):  
East Asia ◽  
Host Plant ◽  
21St Century ◽  
Rapid Expansion ◽  
The South ◽  
South Eastern ◽  
Preimaginal Stages ◽  
Main Host ◽  
First Time

The paper presents the first records of box tree moth from a few localities situated in 5 UTM squares in the Podkarpacie region – in the south-eastern Poland. This species, native to the subtropical regions of East Asia, was accidentally introduced into Europe in the first decade of the 21st century. Box tree moth was observed for the first time in Poland in 2012, and more recently in the Podkarpacie region in 2016. The rapid expansion of the species is mostly explained by the transfer of its preimaginal stages along with its main host plant (Buxus spp.).

Studies on the biology of Acanthomia tomentosicollis (Stål) (Hemiptera: Coreidae) in the field and insectary

1977 ◽  
Vol 67 (2) ◽  
pp. 249-257 ◽  
Author(s):  
R. I. Egwuatu ◽  
T. Ajibola Taylor
Keyword(s):  
Host Plant ◽  
Pigeon Pea ◽  
Oviposition Period ◽  
Main Host ◽  
Males And Females ◽  
The Mean ◽  
Ibadan Nigeria

AbstractStudies on the biology of Acanthomia tomentosicollis (Stål) at Ibadan, Nigeria, showed that the periods of development in the field and the insectary averaged 17 and 18 days, respectively. The hemispherical, hexagonally sculptured eggs were laid in batches of 2.99 (mean=7 eggs per batch in the insectary and 20 in the field). Preoviposition periods were 11–22 days in unmated and 6–9 days in mated females. The mean number of eggs deposited by mated females (202) was significantly higher than that deposited by unmated females (135), although the average oviposition period of 16 weeks in unmated females was three weeks longer than in mated females. Unmated males and females were longer-lived than their mated counterparts, and females generally lived longer than males. These results and other observations on 'the biology of A. tomentosicollis are discussed in the context of its seasonal biology and the pattern of infestation of pigeon pea (Cajanus cajari), its main host plant.

INHERITANCE OF VIRULENCE IN PUCCINIA RECONDITA ON ALLELES AT THE Lr2 LOCUS FOR RESISTANCE IN WHEAT

1974 ◽  
Vol 16 (2) ◽  
pp. 323-332 ◽  
Author(s):  
P. L. Dyck ◽  
D. J. Samborski
Keyword(s):  
Leaf Rust ◽  
Rust Fungus ◽  
Recessive Gene ◽  
Puccinia Recondita ◽  
Single Recessive Gene ◽  
Wheat Varieties ◽  
Additional Gene

The inheritance of virulence on the Lr2 alleles for resistance to the leaf rust fungus (P. recondita Rob. ex. Desm.) was investigated using selfed and "backcross" selfed cultures of race 11, F1 cultures of race 9 × race 11, race 11 × race 161 and F1 and F2 cultures of race 9 × race 161. The three host alleles Lr2a, Lr2b and Lr2c were transferred into the wheat varieties Thatcher, Red Bobs and Prelude by a series of backcrosses. Race 11, and probably race 161, have a single recessive gene, p2, for virulence on the three Lr2 alleles and an additional gene(s) that modifies or inhibits the action of the p2 gene on the three host alleles. Lines with the Lr2a gene from Webster were most resistant to the greatest number of cultures, those with Lr2b from Carina were intermediate while those with Lr2c from Brevit and Loros were least resistant. The Lr2 alleles were most effective in the Thatcher background, intermediate in Prelude and least effective in Red Bobs.

Unusual host selection in Amblycerus dispar larvae (Coleoptera: Chrysomelidae: Bruchinae) and its potential impact on stored almonds (Prunus dulcis)

2021 ◽  
pp. 1-10
Author(s):  
Federico A. Agrain ◽  
Santiago Hernández Del Pino ◽  
Guillermo P. López-García ◽  
Sergio Roig-Juñent
Keyword(s):  
Host Plant ◽  
Productivity Loss ◽  
Prunus Dulcis ◽  
Phylogenetic Position ◽  
Distribution Models ◽  
Host Shifts ◽  
Risk Monitoring ◽  
Plant Associations ◽  
Main Host ◽  
The Usa

Abstract We present the first report of Amblycerus dispar (Sharp) attacking stored almonds [Prunus dulcis (Mill.) D. A. Webb] in Argentina. A summarized diagnosis, illustrations, and photographs of the adult and mature larva are provided to facilitate identification. We performed species distribution models for A. dispar and its main host plant Geoffroea decorticans (Gillies ex Hook. & Arn.) Burkart. We include A. dispar into a previous morphological character matrix and conduct a phylogenetic analysis to infer its phylogenetic position. The evolution of host plant associations of the genus Amblycerus is herein re-analyzed. A. dispar and its main host shows high suitability areas especially in central-west Argentina and Chile, whereas for the USA, high suitability areas were found for the south-western which include the area of almond production in this country. Although the presence of A. dispar in the USA region is very unlikely, we recommend some awareness as other bruchines are present in the area. Although A. dispar is unlikely to become an economically important risk, monitoring for early detection is recommended to avoid productivity loss, especially when the native host is nearby cultivated areas. A. dispar is hypothesized to be the sister species of A. schwarzi Kingsolver. The colonization of a Rosaceae species is a novelty for this genus, being host shifts known as an important factor affecting both natural and agricultural systems.

scholarly journals SERANGAN HAMA DEFOLIATOR PADA BIBIT TANAMAN KEHUTANAN

2016 ◽  
Vol 1 (2) ◽  
pp. 97 ◽  
Author(s):  
Sri Utami ◽  
Agus Ismanto
Keyword(s):  
Plant Breeding ◽  
Host Plant ◽  
Forest Plantation ◽  
Pests And Diseases ◽  
Main Host ◽  
Plantation Development ◽  
Anthocephalus Cadamba

One of the efforts to support the success of forest plantation development is the availability of quality seeds (free from pests and diseases and have the ability to grow good). Defoliator pests is one of the problems frequently encountered pest attack seedlings in the nursery. Defoliator pest attacks will result in the failure of seedlings. The study was conducted at Modern Nursery located in the Sukamoro Village, Banyuasin, South Sumatra Province from February to May 2013. The purpose of the study was to analize the pest which attacks some seedlings e.g. Jabon (Anthocephalus cadamba), kayu bawang (Dysoxylum molissimum) and tembesu (Fagraea fragans) respectively 1 month old. The results showed that Arthroschista hilaralis is defoliator pests that attack several seedlings. A. hilaralis pest attacks Jabon begin observation two week with the percentage and intensity of attack by 40% and 30,39% respectively. The pest attacks continue to rise to observations in fourth week with a severity of 100%. The percentage and intensity of pests on kayu bawang seedling 68,72% and 40,66% respectively.  On the seedlings tembesu, percentages and intensity  of pest attacks 5,83% and 3,88% respectively, which is found in the observation of the 4th week. This showed that A. hilaralis is one of the pests that have a preference to eat in addition to its main host plant Jabon. Therefore, the presence of pests defoliator A. hilaralis on a scale nurseries should be anticipated. Management required appropriate controls in preventing these pests so that forestry plant breeding activities are carried out within the framework of the provision of seeds for planting in a broader scale having success.

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