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Global Transcriptome Profiling Identified Transcription Factors, Biological Process, and Associated Pathways for Pre-Harvest Aflatoxin Contamination in Groundnut

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Relation http://oar.icrisat.org/11875/
https://doi.org/10.3390/jof7060413
doi:10.3390/jof7060413
 
Title Global Transcriptome Profiling Identified Transcription Factors, Biological Process, and Associated Pathways for Pre-Harvest Aflatoxin Contamination in Groundnut
 
Creator Soni, P
Pandey, A K
Nayak, S N
Pandey, M K
Tolani, P
Pandey, S
Sudini, H K
Bajaj, P
Fountain, J C
Singam, P
Guo, B
Varshney, R K
 
Subject Biotechnology
Groundnut
Genetics and Genomics
Food Security
Aflatoxins
 
Description Pre-harvest aflatoxin contamination (PAC) in groundnut is a serious quality concern globally,
and drought stress before harvest further exacerbate its intensity, leading to the deterioration
of produce quality. Understanding the host–pathogen interaction and identifying the candidate
genes responsible for resistance to PAC will provide insights into the defense mechanism of the
groundnut. In this context, about 971.63 million reads have been generated from 16 RNA samples
under controlled and Aspergillus flavus infected conditions, from one susceptible and seven resistant
genotypes. The RNA-seq analysis identified 45,336 genome-wide transcripts under control and
infected conditions. This study identified 57 transcription factor (TF) families with major contributions
from 6570 genes coding for bHLH (719), MYB-related (479), NAC (437), FAR1 family protein
(320), and a few other families. In the host (groundnut), defense-related genes such as senescenceassociated
proteins, resveratrol synthase, seed linoleate, pathogenesis-related proteins, peroxidases,
glutathione-S-transferases, chalcone synthase, ABA-responsive gene, and chitinases were found to
be differentially expressed among resistant genotypes as compared to susceptible genotypes. This
study also indicated the vital role of ABA-responsive ABR17, which co-regulates the genes of ABA
responsive elements during drought stress, while providing resistance against A. flavus infection. It
belongs to the PR-10 class and is also present in several plant–pathogen interactions.
 
Publisher MDPI
 
Date 2021-05
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11875/1/jof-07-00413.pdf
Soni, P and Pandey, A K and Nayak, S N and Pandey, M K and Tolani, P and Pandey, S and Sudini, H K and Bajaj, P and Fountain, J C and Singam, P and Guo, B and Varshney, R K (2021) Global Transcriptome Profiling Identified Transcription Factors, Biological Process, and Associated Pathways for Pre-Harvest Aflatoxin Contamination in Groundnut. Journal of Fungi (TSI), 7 (6). pp. 1-18. ISSN 2309-608X