Effects of latitude and soil microbes on the resistance of invasive Solidago canadensis to its co-evolved insect herbivore Corythucha marmorata

2021 ◽  
Author(s):  
Yongge Yuan ◽  
Huifei Jin ◽  
Junmin Li

Abstract Aims There is an increasing likelihood that invasive plants are again exposed to their co-evolved specialist herbivores in the non-native range. However, whether there is a latitudinal pattern associated with the resistance of an invasive plant to its co-evolved herbivores and how soil microbes affect resistance has been little explored. We hypothesized that the resistance of invasive Solidago canadensis to its co-evolved insect herbivore Corythucha marmorata could increase with latitude, and that local rhizosphere microbes could facilitate invasive plants to become resistant to their co-evolved herbivores. Methods We conducted a field survey and a greenhouse experiment to examine whether there was a latitudinal pattern in the abundance of C. marmorata and in the damage it caused to S. canadensis in China. We tested whether local rhizosphere microbes of invasive plants can promote the resistance of S. canadensis to C. marmorata herbivory. Important findings In the field survey, both density of C. marmorata and damage level of S. canadensis were positively correlated with latitude, and with S. canadensis plant growth, indicating a latitudinal pattern in the resistance of S. canadensis to C. marmorata. However, in the greenhouse experiment, S. canadensis from different latitudes did not suffer significantly from different levels of damage from C. marmorata. Additionally, the damage level of S. canadensis was lower when rhizosphere soil and rhizomes originated from field S. canadensis with same damage level than with different damage levels. This result indicates that local rhizosphere soil microbes promote the adaptation of S. canadensis to resistance of C. marmorata.

2018 ◽  
Vol 285 (1884) ◽  
pp. 20181072 ◽  
Author(s):  
Shiyun Qiu ◽  
Xiao Xu ◽  
Shuangshuang Liu ◽  
Wenwen Liu ◽  
Jing Liu ◽  
...  

Flowering synchrony can play an important role in plants' reproductive success, which is essential for the successful establishment and spread of invasive plants. Although flowering synchrony has been found to be closely related to climatic factors, the effects of variation in such factors along latitudinal gradient on flowering synchrony and the role of flowering synchrony in the reproductive success of invading populations remain largely unexplored. In a 2-year field study, we examined the latitudinal variation of flowering phenology, especially flowering synchrony, in an invasive plant, Spartina alterniflora , along coastal China, and its relationship with population seed set across three climatic zones. We found that first flowering date was delayed, and flowering synchrony increased with increasing latitude. Flowering synchrony was negatively related to temperature during flowering season but not to soil properties or precipitation, suggesting that climate has shaped the latitudinal pattern of flowering synchrony. Moreover, a positive correlation between flowering synchrony and seed set across latitudes indicates the possible role of flowering synchrony in the latitudinal pattern of sexual reproduction in S. alterniflora . These results suggest that, in addition to the effects of climate on the growth of invasive species, climatic factors can play an important role in the invasion success of alien plants by regulating the flowering synchrony and thus the reproductive success of invasive plants.


2007 ◽  
Vol 2 (2) ◽  
pp. 196-204 ◽  
Author(s):  
Hua Huang ◽  
Shuiliang Guo ◽  
Guoqi Chen

2021 ◽  
Vol 25 ◽  
Author(s):  
Na Liu ◽  
Meina Song ◽  
Yulin Sun ◽  
Fengying Yang ◽  
Haina Yu ◽  
...  

: One new eudesmane sesquiterpene (1) and one new chromolaevane sesquiterpene (2), along with 19 known compounds, have been isolated from the invasive plant Solidago canadensis. Their structures were established by spectroscopic means including 1D/2D-NMR and HR-ESIMS analyses. Compounds 10 and 12, in combination with fluconazole, showed significant activity in an in vitro synergistic antifungal assay against Candida albicans, with FIC values of <0.15625 and <0.28125, respectively. Meanwhile, the allelopathic effects of these sesquiterpenes on Arabidopsis seed germination were also tested. Compounds 5, 7, 17 and 18 retarded the seed germination of Arabidopsis with IC50 values ranging from 9.1 to 41 μg/mL, while other compounds showed no obvious inhibitory effects.


2017 ◽  
Vol 16 (7) ◽  
pp. 1624-1633 ◽  
Author(s):  
Jun-yu LUO ◽  
Shuai ZHANG ◽  
Xiang-zhen ZHU ◽  
Li-min LU ◽  
Chun-yi WANG ◽  
...  

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0139234 ◽  
Author(s):  
Zhijie Zhang ◽  
Xiaoyun Pan ◽  
Ziyan Zhang ◽  
Kate S. He ◽  
Bo Li

2017 ◽  
Vol 4 (1) ◽  
pp. 148-160
Author(s):  
Arjun C.P ◽  
Anoop V.K ◽  
Tijo K.J ◽  
Anoopkumar T.K ◽  
Roshnath R

Butterfly diversity was recorded from Nov (2013) - May (2014) in Pookode region. A total number of 128 species recorded from the five families; Nymphalidae (46 species) Lycaenidae (28 species), Hesperiidae (22 species), Pieridae (17 species) and Papilionidae (15 species) respectively. During the survey invasive plant species were also recorded. There were 36 species of invasive plants from 18 families identified from the study area. More butterflies were attracted towards nectar offering invasive plants. Chromolaena odorata, Ipomea cairica, Lantana camara, Merremia vitifolia, Mikania micrantha, Mimosa diplotricha, Pennisetumpolystachyon, Pteridium aquilinum, Quisqualis indica and Sphagneticola trilobata were the major invasive plants found in the Pookode region and their flower attracts butterfly for pollination. Even though nectar offered by the plants are supportive for growth, in long run these species can affect butterfly population bydeclining native host larval plant species for butterfly reproduction. Invasive species compete with the native flora and reduce its population. Management practices like physical, chemical and modern bio control measures could be used for eradicating of invasive plants. Wise use of invasive plants for other economical purpose such as bio-fuel, medicinal purpose, bio-pesticide and handicraft could be suggested. Successful management of invasive species are needed for conserving Lepidoptera fauna and other native biota of the area.


2020 ◽  
Vol 11 (1) ◽  
pp. 33
Author(s):  
Enny Widyati

<p><strong>Abstrak.</strong> Seperti halnya dunia manusia, tumbuhan juga mengembangkan sistem komunikasi untuk mencapai kesejahteraan hidupnya. Bahasa yang digunakan adalah senyawa kimia yang diproduksi oleh eksudat akar. Tumbuhan merupakan inisiator karena mereka yang memiliki tujuan untuk apa komunikasi dibangun. Tumbuhan mengeluarkan eksudat akar untuk memanggil atau untuk mengusir mikroba yang diinginkan. Tumbuhan mengirim surat undangan pada beberapa mikroba dengan mensekresikan eksudat akar. Untuk membangun asosiasi mikoriza tumbuhan mengeluarkan gula, asam amino dan strigolakton. Hal tersebut akan dibalas oleh fungi dengan mengeluarkan senyawa flavonoid yang menunjukkan spesifikasi jenis inang-mikoriza. Hadirnya senyawa flavonoid merupakan undangan bagi rhizobium pada tanaman legum untuk membangun asosiasi. Tumbuhan akan menyeleksi rhizobium yang akan diajak berasosiasi dengan mensekresikan senyawa kanavanin yang bersifat toksik. Kesalahan dalam mengeluarkan eksudat akar merupakan surat undangan yang keliru bagi tumbuhan. Dosis senyawa stigolakton yang terlalu rendah tidak akan dapat membentuk asosiasi mikoriza tetapi yang berkembang adalah patogen. Walaupun tumbuhan menghasilkan senyawa fitoantisipin untuk mencegah serangan patogen dan fitoaleksin ketika patogen sudah menginfeksi. Komunikasi akar dengan akar tumbuhan lain dilakukan dengan menghasilkan senyawa alelopati untuk membatasi pertumbuhan akar di sekelilingnya yang dianggap sebagai pesaing. Tanaman invasif atau gulma umumnya selain menghasilkan alelopati juga memproduksi katekin yang dapat membunuh mikroba menguntungkan pada tumbuhan setempat. Akibatnya tumbuhan lokal akan rentan terhadap serangan penyakit dan berujung pada kematian. Selain alelopati, untuk merespon kehadiran tetangganya tumbuhan juga menghasilkan senyawa glukosinolat yang jumlahnya makin meningkat sejalan dengan tingginya biodiversitas vegetasi. Senyawa ini merupakan senyawa beracun bagi patogen, sehingga tumbuhan yang dibudidayakan dengan pola monokultur menjadi rentan terhadap penyakit. Oleh karena itu agar tanah tetap memiliki kandungan senyawa glukosinolat yang memadai serta tetap memelihara kondisi rhizosfir yang dinamis perlu dilakukan pergiliran tanaman varietas lokal setelah beberapa rotasi tanaman.</p><p><em><strong>Abstract.</strong> Similar to human, plants also develop a communication system to achieve their prosperity. Plants utilize chemical compounds of their root exudates as the “languange”. Plants are the initiator of communications, since they define the purposes of building communication. Root exudates are released either to attract or to demenish the soil microbes target as an “invitation letter” to some microbes. To build a mycorrhizal association, for examples, plants issue sugars, amino acids and strygolactones to the rhizosphere. Fungi will reply the invitation by secreting flavonoid compounds that determine host-mycorrhizal specifications. The presence of flavonoids is another invitation to rhizobia to establish association in legume rhizosphere. Plants will select attracted bacteria to build the most host-specific rhizobium association by secreting canavanine compounds that are toxic to non-target rhizobia. Occasionally, an error happened in issuing invitation. When plant release strygolactone in a very low dosages, it will be failure to build mycorrhizal associations otherwise pathogen colonizations, although plants produce either phytoantisipine to prevent pathogens infection or phytoalexin to counter infected pathogens. Communication among roots of neighboring plants is conducted by producing allellopathy compound to limit root growth of the competitors. Invasive plants or weeds generally also produce catechine compounds over the allellophaty that will eliminate soil beneficial microbes of the indigenous plants. As a result, the native plants will be vulnerable to disease and lead to distinct. Responding to the presence of neighboring roots, plants also produce glucosinolate compounds. Glucocynolate consentration will be increased in line with the richness of vegetation biodiversity. These compounds are toxic to the pathogen, which is why plants cultivated in monoculture become more susceptible to disease. Furthermore, to improve soil glucocynolate and to manage the dynamics in the rhizosphere, need to a shift cultivation after several rotations of a commodity with the local varieties.</em></p>


2020 ◽  
Vol 6 (1) ◽  
pp. 46-53
Author(s):  
Miftahul Mukarromah ◽  
Ari Hayati ◽  
Hasan Zayadi

Balekambang Beach is the most visited beach destination in Malang Regency until the end of 2015. One of the invasive pathways of invasive plants is Tourism. The purpose of this study was to identify invasive plant species, diversity and compare the value of the diversity index with abiotic factors.This research method is descriptive with systematic sampling techniques using Belt Transect, and measurements of abiotic factors include edafic factors and climatic micro factors. Invasive alien plant species found in the Balekambang coastal forest are identified as seventeen species namely (Hemighraphis glaucescens), (Oplismenus sp), (Amomum coccineum), (Arenga obtusifolia), (Leucaena leucochephana), (Mimosa sp), (Cassia siamea), (Eupatorium odoratum), (Hyptis capitata), (Cynodon dactylon), (Sida rhombifolia), (Synedrella nudiflora), (Chromolaena odorata),  (Leucaena leucochepala), (Mimosa pudica), and (Ruellia tuberosa) with the index value of invasive plant diversity in protected forests and production classified as high compared to mangroves. The results of the diversity index value with abiotic factors showed a positive (+) direction on soil sailinity where the R2 value was 0.5606 or 50%, which means it showed a relationship between soil salinity and an abundance of invasive plants in Balekambang coastal forest area of 50%.  Keywords:invasive plants, Balekambang beach, belt transect, diversity ABSTRAK Pantai Balekambang adalah destinasi wisata alam pantai di Kabupaten Malang yang paling banyak dikunjungi hingga akhir tahun 2015.Salah satu jalur invasi dari tumbuhan invasif adalah Tourism (Wisata). Tujuan dari penelitian ini adalah mengidentifikasi jenis tumbuhan invasif, keanekaragaman dan membandingkan nilai indeks keanekaragaman dengan faktor abiotik. Metode penelitian ini deskriptif dengan tehnik pengambilan sampling secara sistematis menggunakan Belt Transect, dan pengukuran faktor abiotik meliputi faktor edafik dan faktor mikro klimatik. Jenis spesies tumbuhan asing invasif yang terdapat di hutan pantai Balekambang diidentifikasi sebanyak tujuh belas spesies yaitu Hemighraphis glaucescens, Oplismenus sp, Amomum coccineum, Arenga obtusifolia, Leucaena leucochephana, Mimosa sp, Cassia siamea, Eupatorium odoratum, Hyptis capitata, Cynodon dactylon, Sida rhombifolia, Synedrella nudiflora.Chromolaena odorata, Leucaena leucochepala, Mimosa pudica, dan Ruellia tuberose dengan nilai indeks keanekaragaman tumbuhan invasif pada hutan lindung dan produksi tergolong tinggi dibanding mangrove. Hasil analisis uji korelasi nilai indeks keanekaragaman dengan faktor abiotik menunjukkan arah positif (+) pada salinitas tanah dimana nilai R2 sebesar 0.5606 atau 50%, yang artinya menunjukkan hubungan antara salinitas tanah dengan kelimpahan tumbuhan invasif di kawasan hutan pantai Balekambang sebesar 50%. Kata kunci: tumbuhan invasif, pantai Balekambang, belt transect, keanekaragaman


2020 ◽  
pp. 27-46
Author(s):  
Anja Kalinic ◽  
Ivana Bjedov ◽  
Dragica Obratov-Petkovic ◽  
Jelena Tomicevic-Dubljevic

The floristic diversity of Deliblato sands SNR is significantly endangered by the spread of invasive plants. In addition to field research, which included the collection of plant material in the area of Deliblato sands SNR, primary and secondary data was collected in this paper. The primary data for the purposes of this study was obtained by applying a questionnaire technique to the management of the protected area - PE ?Vojvodinasume? and an expert interview technique to a representative of the Provincial Institute for Nature Conservation. The secondary data was collected to gain a better and broader understanding of the management of Deliblato sands SNR. Based on the field investigations, the analysis of primary and secondary data on invasive plant species was also recognized as a key threatening factor. An analysis of the floristic structure and composition of these plant species, their origin, as well as the manner of their propagation and reproduction was carried out, in order to make a recommendation on the preventive measures for the protection and suppression of invasive plant species and to improve the habitat. In the area of Deliblato sands SNR, 39 invasive plant species (4,33% of the total flora) were found with different invasiveness categories, among which herbaceous, annual, North American species from the Compositae family prevail. Protection measures include the mapping of habitats of invasive species, establishing cooperation with managers and scientific institutions, constant monitoring of endangered habitats and plant species, as well as the creation of a special sector responsible for enhancing biodiversity.


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