Parasitic interactions of Orobanche with selected Nicotiana species and identification of effective resistant genotypes

Swarnalatha, G.; Sarala, K.; Rao, K. Prabhakara; Baghyalakshmi, K.; Rao, K. R. S. Sambasiva; Bindu, J.

doi:10.1007/s10722-020-00900-z

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Reduced height and weight have been observed in tobacco (Nicotiana spp.) parasitized by O. cernua [15]. Though retaining certain biosynthetic capacities, hemiparasitic plants do not stop stealing from autotrophic plants.…”

Section: Discussionmentioning

confidence: 99%

Combined Metabolome and Transcriptome Analysis Highlights the Host’s Influence on Cistanche deserticola Metabolite Accumulation

Feng

Wei

et al. 2023

IJMS

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The medicinal plant Cistanche deserticola Ma (Orobanchaceae) is a holoparasitic angiosperm that takes life-essential materials from Haloxylon ammodendron (C. A. Mey.) Bunge (Amaranthaceae) roots. Although many experiments have been conducted to improve the quality of C. deserticola, little attention has been paid to the host’s influence on metabolite accumulation. In this study, transcriptomic and metabolomic analyses were performed to unveil the host’s role in C. deserticola’s metabolite accumulation, especially of phenylethanoid glycosides (PhGs). The results indicate that parasitism by C. deserticola causes significant changes in H. ammodendron roots in relation to metabolites and genes linked to phenylalanine metabolism, tryptophan metabolism and phenylpropanoid biosynthesis pathways, which provide precursors for PhGs. Correlation analysis of genes and metabolites further confirms that C. deserticola’s parasitism affects PhG biosynthesis in H. ammodendron roots. Then we found specific upregulation of glycosyltransferases in haustoria which connect the parasites and hosts. It was shown that C. deserticola absorbs PhG precursors from the host and that glycosylation takes place in the haustorium. We mainly discuss how the host resists C. deserticola parasitism and how this medicinal parasite exploits its unfavorable position and takes advantage of host-derived metabolites. Our study highlights that the status of the host plant affects not only the production but also the quality of Cistanches Herba, which provides a practical direction for medicinal plant cultivation.

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Section: Discussionmentioning

confidence: 99%

Combined Metabolome and Transcriptome Analysis Highlights the Host’s Influence on Cistanche deserticola Metabolite Accumulation

Feng

Wei

et al. 2023

IJMS

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“…These changes in the availability of nutrients may be important for microbial community structure and O. cumana parasitism. Potassium [ 33 ], nitrogen, and phosphorus [ 34 ] depletion were previously shown to be directly responsible for damage to the host by Orobanche . Thus, changes in the soil nutrient contents may also affect the structure of the microbiome.…”

Section: Discussionmentioning

confidence: 99%

Microbial community roles and chemical mechanisms in the parasitic development of Orobanche cumana

Lei

Liu

et al. 2022

iMeta

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Orobanche cumana Wallr. is a holoparasite weed that extracts water and nutrients from its host the sunflower, thereby causing yield reductions and quality losses. However, the number of O. cumana parasites in the same farmland is distinctly different. The roots of some hosts have been heavily parasitized, while others have not been parasitized. What are the factors contributing to this phenomenon? Is it possible that sunflower interroot microorganisms are playing a regulatory role in this phenomenon? The role of the microbial community in this remains unclear. In this study, we investigated the rhizosphere soil microbiome for sunflowers with different degrees of O. cumana parasitism, that is, healthy, light infection, moderate infection, and severe infection on the sunflower roots. The microbial structures differed significantly according to the degree of parasitism, where Xanthomonadaceae was enriched in severe infections. Metagenomic analyses revealed that amino acid, carbohydrate, energy, and lipid metabolism were increased in the rhizosphere soils of severely infected sunflowers, which were iMeta. 2022;1:e31.wileyonlinelibrary.com/journal/imt2

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“…Parasitic weeds infect economically important crops like tobacco and seriously threaten the livelihoods of marginal and small farmers. Upon infection, they exploit host plants for water, nutrients, metabolites, and hormones with the help of one or more haustoria [1,2]. Parasitic plants from the families Convolvulaceae, Loranthaceae, Viscaceae, and Orobanchaceae grow on their host plants [3,4].…”

Section: Introductionmentioning

confidence: 99%

Overcoming Orobanche Challenges: A Study of Knowledge and Adoption of Management Practices among FCV Tobacco Farmers in Andhra Pradesh, India

Srinivas,

Reddy,

Hema

et al. 2024

J. Sci. Res. Rep.

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This study aims to assess the level of knowledge and adoption of Orobanche management practices among FCV tobacco farmers in Andhra Pradesh. The survey was conducted in twenty-four villages of two mandals, involving a total of 240 respondents. Data was collected by personnel /telephonic interview method through semi structured interview schedule designed for the study. Statistical tools viz., frequency, percentage, Friedman's two-way ANOVA and regression analysis were used in the data analysis. Results show that 72% of farmers have low level of knowledge and low level of adoption (70%) orobanche,. Although most farmers are familiar with the symptoms of Orobanche infestation, implementation of management strategies such as crop rotation and use of resistant varieties is still limited. High labour wages, availability of labour, lack of knowledge on means of spread orobanche, poor phyto sanitary measures and physical removal of orobanche after flowering were the major constraints for management of orobancheThis research indicates an urgent need for more intensive outreach and training programs to increase adoption of appropriate management practices. Tobacco Board, ICAR-CTRI, and Trade should initiate efforts for fostering the adoption of integrated Orobanche management practices It is hoped that these findings can encourage policies that focus more on educating farmers to increase sustainable tobacco production.

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Parasitic interactions of Orobanche with selected Nicotiana species and identification of effective resistant genotypes

Cited by 3 publications

References 7 publications

Combined Metabolome and Transcriptome Analysis Highlights the Host’s Influence on Cistanche deserticola Metabolite Accumulation

Combined Metabolome and Transcriptome Analysis Highlights the Host’s Influence on Cistanche deserticola Metabolite Accumulation

Microbial community roles and chemical mechanisms in the parasitic development of Orobanche cumana

Overcoming Orobanche Challenges: A Study of Knowledge and Adoption of Management Practices among FCV Tobacco Farmers in Andhra Pradesh, India

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