Padma Nimmakayala

ORCID: 0000-0002-2570-9193
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About
Contact & Profiles
Research Areas
  • Advances in Cucurbitaceae Research
  • Chromosomal and Genetic Variations
  • Plant Virus Research Studies
  • Plant Disease Management Techniques
  • Pomegranate: compositions and health benefits
  • Irrigation Practices and Water Management
  • Plant Molecular Biology Research
  • Genomics and Phylogenetic Studies
  • Plant Stress Responses and Tolerance
  • Plant Disease Resistance and Genetics
  • Plant Gene Expression Analysis
  • Insect Utilization and Effects
  • Plant Pathogens and Resistance
  • Genetic and Environmental Crop Studies
  • Heavy metals in environment
  • Plant-Microbe Interactions and Immunity
  • Ion Channels and Receptors
  • Neurobiology and Insect Physiology Research
  • Powdery Mildew Fungal Diseases
  • Postharvest Quality and Shelf Life Management
  • Plant responses to elevated CO2
  • Genetic Mapping and Diversity in Plants and Animals
  • Insect Pest Control Strategies
  • Arsenic contamination and mitigation
  • Plant Pathogenic Bacteria Studies

West Virginia State University
2015-2024

Universidad Autónoma de Coahuila
2023

Virginia State University
2023

West Virginia University
2023

The University of Texas Rio Grande Valley
2023

Texas A&M University
2021

Years of selection for desirable fruit quality traits in dessert watermelon (Citrullus lanatus) has resulted a narrow genetic base modern cultivars. Development novel genomic and resources offers great potential to expand diversity improve important watermelon. Here, we report high-quality genome sequence cultivar 'Charleston Gray', principal American watermelon, complement the existing reference from '97103', an East Asian cultivar. Comparative analyses between genomes Gray' '97103'...

10.1111/pbi.13136 article EN cc-by Plant Biotechnology Journal 2019-04-25

A large single nucleotide polymorphism (SNP) dataset was used to analyze genome-wide diversity in a diverse collection of watermelon cultivars representing globally cultivated, genetic diversity. The marker density required for conducting successful association mapping depends on the extent linkage disequilibrium (LD) within population. Use genotyping by sequencing reveals numbers SNPs that turn generate opportunities and marker-assisted selection, even crops such as which few genomic...

10.1186/1471-2164-15-767 article EN cc-by BMC Genomics 2014-09-08

MicroRNAs (miRNAs), a class of small non-coding endogenous RNAs that regulate gene expression post-transcriptionally, play multiple key roles in plant growth and development biotic abiotic stress response. Knowledge miRNAs pomegranate fruit have not been explored.

10.1186/s12870-016-0807-3 article EN cc-by BMC Plant Biology 2016-05-26

Abstract Accumulated capsaicinoid content and increased fruit size are traits resulting from Capsicum annuum domestication. In this study, we used a diverse collection of C. to generate 66,960 SNPs using genotyping by sequencing. The study identified 1189 haplotypes containing 3413 SNPs. Length individual linkage disequilibrium (LD) blocks varied along chromosomes, with regions high low LD interspersed an average 139 kb. Principal component analysis (PCA), Bayesian model based population...

10.1038/srep38081 article EN cc-by Scientific Reports 2016-11-30

Melon (Cucumis melo L.) is a phenotypically diverse eudicot diploid (2n = 2x 24) has climacteric and non-climacteric morphotypes show wide variation for fruit firmness, an important trait transportation shelf life. We generated 13,789 SNP markers using genotyping-by-sequencing (GBS) anchored them to chromosomes understand genome-wide fixation indices (Fst) between various melon genomewide linkage disequilibrium (LD) decay. The FST accessions of cantalupensis inodorus was 0.23. agrestis in...

10.3389/fpls.2016.01437 article EN cc-by Frontiers in Plant Science 2016-09-22

The plant microbiome is a key determinant of health and productivity, changes in the can alter tolerance to biotic abiotic stresses quality end produce. Little known about microbial diversity its effect on carbohydrate metabolism ripe fruits. In this study, we aimed understand function microorganisms relation watermelon We used 16S metagenomics RNAseq metatranscriptomics for analysis red (PI459074, Congo, SDRose) yellow fruit-flesh cultivars (PI227202, PI435990, JBush) geographically...

10.3389/fpls.2018.00004 article EN cc-by Frontiers in Plant Science 2018-01-19

The exploitation of synthetic polyploids for producing seedless fruits is well known in watermelon. Tetraploid progenitors triploid watermelon plants, compared with their diploid counterparts, exhibit wide phenotypic differences. Although many factors modulate alternative splicing (AS) the effects autopolyploidization on AS are still unknown. In this study, we used tissues leaf, stem, and fruit tetraploid sweet to understand changes gene expression occurrence AS. RNA-sequencing analysis was...

10.1093/jxb/eru486 article EN Journal of Experimental Botany 2014-12-17

ATP-binding cassette (ABC) transporter genes act as transporters for different molecules across biological membranes and are involved in a diverse range of processes. In this study, we performed genome-wide identification expression analysis encoding ABC proteins three Capsicum species, i.e., annuum, baccatum chinense. is valuable horticultural crop worldwide an important constituent many foods while containing several medicinal compounds including capsaicin dihydrocapsaicin. Our results...

10.1371/journal.pone.0215901 article EN cc-by PLoS ONE 2019-04-30

Abstract Background MicroRNAs (miRNAs) are a class of non-coding small RNAs involved in post-transcriptional regulation gene expression critical for plant growth and development, stress responses other diverse biological processes plants. The Cucurbitaceae or cucurbit family represents some economically important species, particularly those with edible medicinal fruits. Genomic tools the molecular analysis members this just emerging. Partial draft genome sequence became available recently...

10.1186/1471-2164-13-329 article EN cc-by BMC Genomics 2012-07-23

Abstract We used genotyping by sequencing to identify a set of 10,480 single nucleotide polymorphism (SNP) markers for constructing high-resolution genetic map 1096 cM watermelon. assessed the genome-wide variation in recombination rate (GWRR) across and found an association between GWRR diversity. Collinearity reference sequence watermelon was studied inconsistency chromosome rearrangements. diversity, linkage disequilibrium (LD), selective sweep wild, semi-wild, domesticated accessions...

10.1534/g3.114.012815 article EN cc-by G3 Genes Genomes Genetics 2014-09-17

The ankyrin (ANK) repeat protein family is largely distributed across plants and has been found to participate in multiple processes such as plant growth development, hormone response, response biotic abiotic stresses. It considered one of the major markers capsaicin content pepper fruits. In this study, we performed a genome-wide identification expression analysis genes encoding ANK proteins three Capsicum species: baccatum, annuum chinense. We identified total 87, 85 96 C. chinense...

10.1038/s41598-020-61057-4 article EN cc-by Scientific Reports 2020-03-04

Pepper (Capsicum annuum L.) is an economically important crop with added nutritional value. Production of capsaicin quantitative trait high environmental variance, so the development markers regulating capsaicinoid accumulation for pepper breeding programs. In this study, we performed association mapping at gene level to identify single nucleotide polymorphisms (SNPs) associated pathway metabolites in a diverse Capsicum collection during two seasons. The genes Pun1, CCR, KAS and HCT were...

10.1371/journal.pone.0086393 article EN cc-by PLoS ONE 2014-01-27

Principal component analysis (PCA) with 36,621 polymorphic genome-anchored single nucleotide polymorphisms (SNPs) identified collectively for Capsicum annuum and baccatum was used to characterize population structure species domestication of these two important incompatible cultivated pepper species. Estimated mean diversity (π) Tajima's D across various chromosomes revealed biased distribution toward negative values on all (except chromosome 4) in C. baccatum, indicating a bottleneck during...

10.3389/fpls.2016.01646 article EN cc-by Frontiers in Plant Science 2016-11-03

The heavy-metal-associated (HMA) proteins are a class of PB1-type ATPases related to the intracellular transport and detoxification metals. However, due lack information regarding HMA gene family in Cucurbitaceae family, comprehensive genome-wide analysis was performed ten species: Citrullus amarus, colocynthis, lanatus, mucosospermus, Cucumis melo, sativus, Cucurbita maxima, moschata, pepo, Legenaria siceraria. We identified 103 Cucurbit with various members, ranging from 8 (Legenaria...

10.3390/genes14101877 article EN Genes 2023-09-27

Habanero peppers constantly face biotic and abiotic stresses such as pathogen/pest infections, extreme temperature, drought UV radiation. In addition, the fruit cutin lipid composition plays an important role in post-harvest water loss rates, which turn causes shriveling reduced quality storage. this study, we integrated metabolome transcriptome profiling pertaining to two habanero genotypes: PI 224448 257145. The fruits were selected by waxy or glossy phenotype on their surfaces....

10.3390/ijms21041397 article EN International Journal of Molecular Sciences 2020-02-19

Polyploidy has played a crucial role in plant evolution, development and function. Synthetic autopolyploid represents an ideal system to investigate the effects of polyploidization on transcriptional regulation. In this study, we deciphered impact genome duplication at phenotypic molecular levels watermelon. Overall, 88% genes tetraploid watermelon followed >1:1 dosage effect, accordingly, differentially expressed were largely upregulated. addition, great number hypomethylated regions (1688)...

10.1111/tpj.15256 article EN publisher-specific-oa The Plant Journal 2021-03-31
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