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Dear Colleagues,

In order to secure a stable rice yield in a variety of global climates, it is important to identify genes related to the genes related to the defense mechanism of rice according to the external and internal reactions of rice. Therefore, this Section is based on the study of related genes screened by QTL and their effect on making the cDNA library more effective than NGS. The Section also aims to accurately list methods related to the morphological investigation of rice for stress and to present a series of molecular biological applications that improve the efficiency of related genetic analysis.

Prof. Dr. Kyung–Min Kim
Guest Editor

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Keywords

climate change
drought
lodging
abiotic stress
biotic stress
morphological
QTL

Published Papers (1 paper)

Research

11 pages, 2958 KiB

Open AccessArticle

Identification of a Major Locus for Lodging Resistance to Typhoons Using QTL Analysis in Rice

by Dan-Dan Zhao, Yoon-Hee Jang, Eun-Gyeong Kim, Jae-Ryoung Park, Rahmatullah Jan, Lubna, Sajjad Asaf, Saleem Asif, Muhammad Farooq, Hyunjung Chung, Dong-Jin Kang and Kyung-Min Kim

Plants 2023, 12(3), 449; https://doi.org/10.3390/plants12030449 - 18 Jan 2023

Cited by 4 | Viewed by 1631

Abstract

We detected a new target quantitative trait locus (QTL) for lodging resistance in rice by analyzing lodging resistance to typhoons (Maysak and Haishen) using a scale from 0 (no prostrating) to 1 (little prostrating or prostrating) to record the resistance score in a Cheongcheong/Nagdong double haploid rice population. Five quantitative trait loci for lodging resistance to typhoons were detected. Among them, qTyM6 and qTyH6 exhibited crucial effects of locus RM3343–RM20318 on chromosome 6, which overlaps with our previous rice lodging studies for the loci qPSLSA6-2, qPSLSB6-5, and qLTI6-2. Within the target locus RM3343–RM20318, 12 related genes belonging to the cytochrome P450 protein family were screened through annotation. Os06g0599200 (OsTyM/Hq6) was selected for further analysis. We observed that the culm and panicle lengths were positively correlated with lodging resistance to typhoons. However, the yield was negatively correlated with lodging resistance to typhoons. The findings of this study improve an understanding of rice breeding, particularly the culm length, early maturing, and heavy panicle varieties, and the mechanisms by which the plant’s architecture can resist natural disasters such as typhoons to ensure food safety. These results also provide the insight that lodging resistance in rice may be associated with major traits such as panicle length, culm length, tiller number, and heading date, and thereby improvements in these traits can increase lodging resistance to typhoons. Moreover, rice breeding should focus on maintaining suitable varieties that can withstand the adverse effects of climate change in the future and provide better food security. Full article

(This article belongs to the Special Issue Analysis of Molecular Mechanism Related Environmental Stress in Rice Volume II)

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