Publications by authors named "Kishor Gaikwad"

Small RNA sequencing analysis in two chickpea genotypes, JG 62 (Fusarium wilt-susceptible) and WR 315 (Fusarium wilt-resistant), under Fusarium wilt stress led to identification of 544 miRNAs which included 406 known and 138 novel miRNAs. A total of 115 miRNAs showed differential expression in both the genotypes across different combinations. A miRNA, Car-miR398 targeted copper chaperone for superoxide dismutase (CCS) that, in turn, regulated superoxide dismutase (SOD) activity during chickpea-Foc interaction.

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The present study investigated the linkage between days to flowering (DTF) and growth habit (GH) in pigeonpea using QTL mapping, QTL-seq, and GWAS approaches. The linkage map developed here is the largest to date, spanning 1825.56 cM with 7987 SNP markers.

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Article Synopsis
  • Long non-coding RNAs (lncRNAs) are vital for gene regulation in plants, affecting growth, development, flowering, and stress responses, particularly in cluster bean.
  • The study identified 3,309 differentially expressed lncRNAs (DE-lncRNAs), with many showing tissue-specific expression and involvement in floral development and stress response, validated through qRT-PCR.
  • Findings reveal complex regulatory networks among DE-lncRNAs, mRNAs, and miRNAs, contributing to our understanding of plant development, with data made publicly available in a dedicated database.
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  • CKX genes play a crucial role in regulating cytokinin levels, which are essential for plant growth and embryo/seed development in pigeonpea; however, there's limited research on their specific functions in this area.* -
  • This study discovered 18 CKX genes in pigeonpea, each differing in structure and expression, with many localized in the nucleus and unevenly distributed across certain chromosomes.* -
  • Analysis of gene expression patterns revealed that specific CKX genes may act as negative regulators of seed number per pod, indicating their potential for improving seed and biomass production in pigeonpea.*
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Background: Bemisia tabaci, a significant agricultural pest in Asia, contains distinct genetic groups, Asia-1 and Asia II-1. Understanding its reproductive biology, particularly the role of ejaculatory bulb proteins (EBPs) in mating, is crucial. However, EBPs in B.

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  • Heat stress negatively impacts plant growth by disrupting cellular functions and causing excessive accumulation of reactive oxygen species (ROS), potentially leading to cell death.
  • A study investigated the role of Triticum aestivum Salt Stress Root Protein (TaSSRP) in improving heat stress tolerance by modifying its expression in transgenic tobacco plants, showing better physiological responses compared to wild-type plants.
  • The findings highlight TaSSRP's potential as a target for breeding wheat varieties with enhanced resistance to heat stress, advancing our understanding of thermotolerance mechanisms.
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  • The P-type ATPase superfamily genes are important proteins that move ions across cell membranes using energy from ATP, and they play key roles in plant growth, particularly in reproductive functions.
  • Research on pigeonpea revealed 59 different P-type ATPases, categorized into five subfamilies, with some genes expanded through tandem duplication during evolution.
  • Expression studies showed that specific P-type ATPases may influence pollen fertility, with certain genes being down-regulated in male sterile plants and highly expressed in lines that can restore fertility.
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The present study explores the kitchen waste okra peels derived synthesis of nitrogen doped carbon dots (N-CDs) via simple carbonization followed by reflux method. The synthesized N-CDs was characterized using, TEM, XPS, FTIR, XRD, Raman, UV-Visible and Fluorescence Spectroscopy. The N-CDs emits bright blue emission at 420 nm with 12 % of quantum yield as well as it follows excitation dependent emission.

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  • Scientists studied 144 types of pigeonpea plants to understand how genes affect when they flower and how tall they grow.
  • They found 29 important gene markers that are linked to flowering time and plant height, with some genes affecting both traits at the same time.
  • Eight different "haplotypes" were discovered, which help predict if a plant will flower early or late, and some of these haplotypes are also connected to the height of the plants.
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MicroRNAs (miRNAs) are small non-coding conserved molecules with lengths varying between 18-25nt. Plants miRNAs are very stable, and probably they might have been transferred across kingdoms via food intake. Such miRNAs are also called exogenous miRNAs, which regulate the gene expression in host organisms.

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Unlabelled: an elite heat-stress tolerant shrub, grows in arid regions of desert. However, its molecular mechanism responsible for heat stress tolerance is unexplored. Therefore, we analysed whole transcriptome of Jaisalmer (heat tolerant) and Godhra (heat sensitive) genotypes of to understand its molecular mechanism responsible for heat stress tolerance.

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Modifications within the epigenome of an organism in response to external environmental conditions allow it to withstand the hostile stress factors. Drought in chickpea is a severely limiting abiotic stress factor which is known to cause huge yield loss. To analyse the methylome of chickpea in response to drought stress conditions and how it affects gene expression, we performed whole-genome bisulfite sequencing (WGBS) and RNA-seq of two chickpea genotypes which contrast for drought tolerance.

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Pigeonpea [Cajanus cajan (L.) Millspaugh] is an important grain legume crop with a broad range of 90 to 300 days for maturity. To identify the genomic variations associated with the early maturity, we conducted whole-genome resequencing of an early-maturing pigeonpea mutant TAT-10 and its wild type parent T21.

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is the first plant-parasitic nematode described in literature, dating back to the year 1743. It is responsible for causing earcockle (seed gall) and tundu diseases in wheat and rye. Notably, this nematode has been observed to survive in an anhydrobiotic state for up to 32 years within wheat seed galls.

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Background: Despite plant's ability to adapt and withstand challenging environments, drought poses a severe threat to their growth and development. Although pigeon pea is already quite resistant to drought, the prolonged dehydration induced by the aberrant climate poses a serious threat to their survival and productivity.

Objective: Comparative physiological and transcriptome analyses of drought-tolerant (CO5) and drought-sensitive (CO1) pigeon pea genotypes subjected to drought stress were carried out in order to understand the molecular basis of drought tolerance in pigeon pea.

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Article Synopsis
  • - The GRAS proteins are important plant transcription factors that influence various physiological processes, such as tissue development and responses to stress, and have been studied extensively in multiple plant species like Arabidopsis and rice.
  • - In pigeonpea, researchers identified 60 GRAS genes, analyzing their properties, evolutionary relationships, and regulatory elements, revealing insights into their gene structure and duplication.
  • - The study found that these GRAS genes are involved in specific functions related to plant growth and response to environmental factors, laying the groundwork for future research on their roles in pigeonpea.
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Unlabelled: To unravel the plastid genome diversity among the cultivated groups of the pigeonpea germplasm, we characterized the SNP occurrence and distribution of 142 pigeonpea mini-core collections based on their reference-based assembly of the chloroplast genome. A total of 8921 SNPs were found, which were again filtered and finally 3871 non-synonymous SNPs were detected and used for diversity estimates. These 3871 SNPs were classified into 12 groups and were present in only 44 of the 125 genes, demonstrating the presence of a precise mechanism for maintaining the whole chloroplast genome throughout evolution.

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The complexities of a genome are underpinned to the vast expanses of the intergenic region, which constitutes ∼97-98% of the genome. This region is essentially composed of what is colloquially referred to as the "junk DNA" and is composed of various elements like transposons, repeats, pseudogenes, etc. The latter have long been considered as dead elements merely contributing to transcriptional noise in the genome.

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  • Auxin Response Factors (ARF) are transcription factors that play a crucial role in regulating auxin signaling and various biological processes, including plant growth and yield.
  • A systematic analysis identified 12 ARF genes in pigeonpea, which are crucial for embryo and seed development, with these genes found across several chromosomes and showing specific DNA binding domains.
  • Expression studies indicated that certain ARF genes (like CcARF2, CcARF3, and CcARF18) are significantly related to higher seed numbers, suggesting they play an important role in seed development in different pigeonpea genotypes.
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To combat drought stress in rice, a major threat to global food security, three major quantitative trait loci for 'yield under drought stress' (qDTYs) were successfully exploited in the last decade. However, their molecular basis still remains unknown. To understand the role of secondary regulation by miRNA in drought stress response and their relation, if any, with the three qDTYs, the miRNA dynamics under drought stress was studied at booting stage in two drought tolerant (Sahbaghi Dhan and Vandana) and one drought sensitive (IR 20) cultivars.

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Amino acid transporters (AATs), besides, being a crucial component for nutrient partitioning system are also vital for growth and development of the plants and stress resilience. In order to understand the role of AAT genes in seed quality proteins, a comprehensive analysis of AAT gene family was carried out in chickpea leading to identification of 109 AAT genes, representing 10 subfamilies with random distribution across the chickpea genome. Several important stress responsive cis-regulatory elements like Myb, ABRE, ERE were detected in the promoter region of these CaAAT genes.

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Cluster bean (Cyamopsis tetragonoloba (L.) Taub 2n = 14, is commonly known as Guar. Apart from being a vegetable crop, it is an abundant source of a natural hetero-polysaccharide called guar gum or galactomannan.

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Background: Crop improvement for tolerance to various biotic and abiotic stress factors necessitates understanding the key gene regulatory mechanisms. One such mechanism of gene regulation involves changes in cytosine methylation at the gene body and flanking regulatory sequences. The present study was undertaken to identify genes which might be potential targets of drought-induced DNA methylation in chickpea.

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Background: Long-intergenic non-coding RNAs (lincRNAs) originate from intergenic regions and have no coding potential. LincRNAs have emerged as key players in the regulation of various biological processes in plant development. Cytoplasmic male-sterility (CMS) in association with restorer-of-fertility (Rf) systems makes it a highly reliable tool for exploring heterosis for producing commercial hybrid seeds.

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