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Your search keyword '"Pazhamala, Lekha T."' showing total 19 results
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19 results on '"Pazhamala, Lekha T."'

5. Plant phosphate status influences root biotic interactions.

Author

Pazhamala, Lekha T and Giri, Jitender

Subjects
*VESICULAR-arbuscular mycorrhizas, *DISEASE resistance of plants, *CROP yields, *TRANSCRIPTION factors
Abstract

Phosphorus (P) deficiency stress in combination with biotic stress(es) severely impacts crop yield. Plant responses to P deficiency overlapping with that of other stresses exhibit a high degree of complexity involving different signaling pathways. On the one hand, plants engage with rhizosphere microbiome/arbuscular mycorrhizal fungi for improved phosphate (Pi) acquisition and plant stress response upon Pi deficiency; on the other hand, this association is gets disturbed under Pi sufficiency. This nutrient-dependent response is highly regulated by the phosphate starvation response (PSR) mediated by the master regulator, PHR1 , and its homolog, PHL. It is interesting to note that Pi status (deficiency/sufficiency) has a varying response (positive/negative) to different biotic encounters (beneficial microbes/opportunistic pathogens/insect herbivory) through a coupled PSR– PHR1 immune system. This also involves crosstalk among multiple players including transcription factors, defense hormones, miRNAs, and Pi transporters, among others influencing the plant-biotic–phosphate interactions. We provide a comprehensive view of these key players involved in maintaining a delicate balance between Pi homeostasis and plant immunity. Finally, we propose strategies to utilize this information to improve crop resilience to Pi deficiency in combination with biotic stresses. [ABSTRACT FROM AUTHOR]

Published
2023
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8. Multiomics approach unravels fertility transition in a pigeonpea line for a two‐line hybrid system

Author

Pazhamala, Lekha T., primary, Chaturvedi, Palak, additional, Bajaj, Prasad, additional, Srikanth, Sandhya, additional, Ghatak, Arindam, additional, Chitikineni, Annapurna, additional, Bellaire, Anke, additional, Hingane, Anupama, additional, Kumar, C.V. Sameer, additional, Saxena, K.B., additional, Weckwerth, Wolfram, additional, Saxena, Rachit K., additional, and Varshney, Rajeev K., additional

Published
2020
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9. Arachis hypogaea gene expression atlas for fastigiata subspecies of cultivated groundnut to accelerate functional and translational genomics applications

Author

Sinha, Pallavi, primary, Bajaj, Prasad, additional, Pazhamala, Lekha T., additional, Nayak, Spurthi N., additional, Pandey, Manish K., additional, Chitikineni, Annapurna, additional, Huai, Dongxin, additional, Khan, Aamir W., additional, Desai, Aarthi, additional, Jiang, Huifang, additional, Zhuang, Weijian, additional, Guo, Baozhu, additional, Liao, Boshou, additional, and Varshney, Rajeev K., additional

Published
2020
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10. The alternative breeding approaches for improving yield gains and stress response in pigeonpea (Cajanus cajan).

Author

Saxena, Kulbhushan, Bohra, Abhishek, Choudhary, Arbind K., Sultana, Rafat, Sharma, Mamta, Pazhamala, Lekha T., Saxena, Rachit K., and Xu, Pei

Subjects
YIELD stress, PIGEON pea, BREEDING, BIOCOMPLEXITY, FOOD crops, TROPICAL crops
Abstract

Pigeonpea is an important food legume crop of semi‐arid tropical regions. Plateauing of pigeonpea yield has been worrying breeders for the past 6–7 decades. Serious breeding efforts made during this period resulted in various high‐yielding and disease resistant cultivars. However, the gains in pigeonpea productivity have been modest. The authors, while reviewing this situation, conclude that long generation turnover, complexity of biological traits, low selection response and overreliance upon pedigree breeding present the key bottlenecks for this situation. In this paper, some alternative breeding approaches and technologies are suggested for the genetic enhancement of yield stability and stress response of pigeonpea. [ABSTRACT FROM AUTHOR]

Published
2021
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11. Genome-Wide Identification, Characterization, and Expression Analysis of Small RNA Biogenesis Purveyors Reveal Their Role in Regulation of Biotic Stress Responses in Three Legume Crops

Author

Garg, Vanika, primary, Agarwal, Gaurav, additional, Pazhamala, Lekha T., additional, Nayak, Spurthi N., additional, Kudapa, Himabindu, additional, Khan, Aamir W., additional, Doddamani, Dadakhalandar, additional, Sharma, Mamta, additional, Kavi Kishor, P. B., additional, and Varshney, Rajeev K., additional

Published
2017
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18. Next‐generation sequencing for identification of candidate genes for Fusarium wilt and sterility mosaic disease in pigeonpea (C ajanus cajan)

Author

Singh, Vikas K., primary, Khan, Aamir W., additional, Saxena, Rachit K., additional, Kumar, Vinay, additional, Kale, Sandip M., additional, Sinha, Pallavi, additional, Chitikineni, Annapurna, additional, Pazhamala, Lekha T., additional, Garg, Vanika, additional, Sharma, Mamta, additional, Sameer Kumar, Chanda Venkata, additional, Parupalli, Swathi, additional, Vechalapu, Suryanarayana, additional, Patil, Suyash, additional, Muniswamy, Sonnappa, additional, Ghanta, Anuradha, additional, Yamini, Kalinati Narasimhan, additional, Dharmaraj, Pallavi Subbanna, additional, and Varshney, Rajeev K., additional

Published
2015
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19. Next-generation sequencing for identification of candidate genes for Fusarium wilt and sterility mosaic disease in pigeonpea ( Cajanus cajan).

Author

Singh, Vikas K., Khan, Aamir W., Saxena, Rachit K., Kumar, Vinay, Kale, Sandip M., Sinha, Pallavi, Chitikineni, Annapurna, Pazhamala, Lekha T., Garg, Vanika, Sharma, Mamta, Sameer Kumar, Chanda Venkata, Parupalli, Swathi, Vechalapu, Suryanarayana, Patil, Suyash, Muniswamy, Sonnappa, Ghanta, Anuradha, Yamini, Kalinati Narasimhan, Dharmaraj, Pallavi Subbanna, and Varshney, Rajeev K.

Subjects
GENES, MOSAIC diseases, PIGEON pea, MOLECULAR genetics, GENOTYPES, GENETICS
Abstract

To map resistance genes for Fusarium wilt ( FW) and sterility mosaic disease ( SMD) in pigeonpea, sequencing-based bulked segregant analysis (Seq- BSA) was used. Resistant (R) and susceptible (S) bulks from the extreme recombinant inbred lines of ICPL 20096 × ICPL 332 were sequenced. Subsequently, SNP index was calculated between R- and S-bulks with the help of draft genome sequence and reference-guided assembly of ICPL 20096 (resistant parent). Seq- BSA has provided seven candidate SNPs for FW and SMD resistance in pigeonpea. In parallel, four additional genotypes were re-sequenced and their combined analysis with R- and S-bulks has provided a total of 8362 nonsynonymous (ns) SNPs. Of 8362 ns SNPs, 60 were found within the 2-Mb flanking regions of seven candidate SNPs identified through Seq- BSA. Haplotype analysis narrowed down to eight ns SNPs in seven genes. These eight ns SNPs were further validated by re-sequencing 11 genotypes that are resistant and susceptible to FW and SMD. This analysis revealed association of four candidate ns SNPs in four genes with FW resistance and four candidate ns SNPs in three genes with SMD resistance. Further, In silico protein analysis and expression profiling identified two most promising candidate genes namely C.cajan_01839 for SMD resistance and C.cajan_03203 for FW resistance. Identified candidate genomic regions/ SNPs will be useful for genomics-assisted breeding in pigeonpea. [ABSTRACT FROM AUTHOR]

Published
2016
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