Article
Biochemistry & Molecular Biology
Yong-Pei Wu, Shu-Mei Wang, Yu-Chi Chang, Chi Ho, Yu-Chia Hsu
Summary: This study utilizes marker-assisted backcross breeding method to develop rice varieties with enhanced submergence stress tolerance by selecting progenies carrying Sub1A gene. The resulting genotypes show good agronomic traits and eating quality, providing a promising strategy for developing climate-resilient rice varieties suitable for flood-prone regions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Jasper B. Alpuerto, Mika Fukuda, Song Li, Rana M. F. Hussain, Kodai Sakane, Takeshi Fukao
Summary: SUB1A, an ethylene-responsive transcription factor gene, plays a role in regulating the restricted elongation of uppermost leaves in response to submergence in rice. This study investigates the molecular and physiological functions of SUB1A in mature and growing leaves under submergence. The results show that SUB1A modulates different sets of hormonal pathways, contributing to distinct adaptive responses in mature and growing rice leaves.
Article
Agronomy
Shunsuke Oe, Daisuke Sasayama, Quanshu Luo, Hiroshi Fukayama, Tomoko Hatanaka, Tetsushi Azuma
Summary: Based on the research findings, it is suggested that the deepwater rice cultivar BSB may not display submergence tolerance due to the low expression of SUB1A-1 and/or ERF66 under submergence conditions.
PLANT PRODUCTION SCIENCE
(2022)
Article
Agronomy
Daisuke Sasayama, Mayuko Niikawa, Tomoko Hatanaka, Hiroshi Fukayama, Tetsushi Azuma
Summary: By testing the adaptive response of wild rice accessions to flooding at different stages, it was found that some species exhibited submergence tolerance at the seedling stage and floating ability at the mature stage, which could contribute to improving rice adaptability to flooding. Furthermore, the study showed that adaptive responses to flooding in these species can be achieved independently of the presence of SUB1A and SNORKEL genes.
PLANT PRODUCTION SCIENCE
(2022)
Article
Plant Sciences
Na-Hyun Shin, O. New Lee, Jae-Hyuk Han, Kihwan Song, Hee-Jong Koh, Soo-Cheul Yoo, Joong Hyoun Chin
Summary: Pyramiding useful QTLs into an elite variety is a promising strategy for developing tolerant varieties against multiple abiotic stresses. However, testing the functional compatibility of different QTLs, such as Pup1 and Sub1, is crucial for ensuring their effectiveness in the target variety. In this study, it was found that while Pup1 and Sub1 were functionally compatible under submerged conditions, they exhibited incompatibility under P-non-supplied conditions, suggesting the need for further investigation into the underlying mechanisms.
Article
Plant Sciences
Yiyi Zhang, Yuanfu Xie, Haifan Shi, Yufen Zhuang, Yuan Zheng, Honghui Lin, Huapeng Zhou
Summary: Floods have a detrimental effect on natural and agro-ecosystems, leading to a significant reduction in worldwide crop production. The Arabidopsis thaliana MYB30 transcription factor plays a role in plant submergence response by repressing ethylene biosynthesis through 1-aminocyclopropane-1-carboxylic acid synthase 7 (ACS7). The MYB30 loss-of-function mutant exhibits reduced submergence tolerance with increased ethylene production, while overexpressing MYB30 enhances submergence tolerance and represses ethylene production. ACS7 is a direct target of MYB30, and its loss-of-function mutant displays enhanced submergence tolerance.
PLANT AND CELL PHYSIOLOGY
(2023)
Article
Plant Sciences
Chaopu Zhang, Min Li, Jessica Domingo Rey, Ting Feng, Renee Lafitte, Tianqing Zheng, Yamei Lv, Fengcai Wu, Binying Fu, Jianlong Xu, Fan Zhang, Wei Zeng, Erbao Liu, Jauhar Ali, Wensheng Wang, Zhikang Li
Summary: This study aims to develop rice varieties with good tolerances to drought and submergence. By screening and genetic characterization, 124 introgression lines with improved submergence tolerance (ST) were identified out of 260 lines selected for drought tolerance (DT). The results provide valuable insights into the complex cross-talks between different phytohormone-mediated signaling pathways and the strategy of selective introgression for multiple complex traits.
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Agronomy
Debabrata Panda, Jijnasa Barik
Summary: Flooding is a major stress constraint to rice production globally, with approximately one-fourth of rice crops grown in flood-prone areas. Significant progress has been made in understanding the mechanisms of adaptation and tolerance to flooding in rice over the past two decades. This review summarizes the physiological and molecular mechanisms of flooding tolerance in rice and discusses the implications for future crop improvement programs.
Article
Plant Sciences
Ripa Akter Sharmin, Benjamin Karikari, Fangguo Chang, G. M. Al Amin, Mashiur Rahman Bhuiyan, Aiman Hina, Wenhuan Lv, Zhang Chunting, Naheeda Begum, Tuanjie Zhao
Summary: GWAS identified multiple significant SNPs associated with traits related to seed-flooding tolerance in soybean, with a potential of eight candidate genes and three hub genes that may be involved in seed-flooding tolerance warranting further screening and functional validation for genetic improvement in soybean breeding programs.
Article
Multidisciplinary Sciences
Shunde Su, Tengfei Zhu, Jun Su, Jian Li, Qing Zhao, Xiangyang Kang, Renhua Zheng
Summary: Flooding is a major stress for plants, and F. hodginsii varieties from Gutian exhibit typical flooding tolerance traits and respond more rapidly to flooding stress compared to other provenances. The changes in endogenous GA and ABA contents, as well as the transcriptome analysis, suggest that genes related to ABA and GA response may play a role in the flood-resistant phenotypes of F. hodginsii.
Article
Plant Sciences
Yaoqi Li, Qiong Nan, Yinai Liu, Sue Lin, Hao Ji, Da Sun, Libo Jin, Renyi Peng
Summary: The study found that pretreatment with the NO donor SNP enhanced hypoxia tolerance in maize seedlings by increasing Ca2+ concentration and ADH activities in the roots. It also resulted in a higher antioxidant system capacity and upregulation of hypoxia-responsive gene expression. Overall, NO was found to regulate the response of maize roots to hypoxia.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Review
Agronomy
Shuai Tong, Motoyuki Ashikari, Keisuke Nagai, Ole Pedersen
Summary: Considering the intensification of climate change, the urgent development of resilient rice that can endure abiotic stresses is necessary. Wild relatives of rice possess diverse mechanisms to shield themselves from environmental pressures. These wild plants may provide an untapped source of genetic diversity essential for improving abiotic stress tolerance in cultivated rice. However, traditional breeding methods such as backcrossing and transgenesis pose difficulties in transferring resilience traits between plants. On the other hand, genome editing allows for quick de novo domestication to produce rice with high yields from wild relatives, like O. longistaminata, which exhibits tolerance to multiple abiotic stresses and valuable traits for sustainable rice production.
Article
Plant Sciences
Qingwei Zhang, Shaohu Tang, Jianqiu Li, Chunfen Fan, Libo Xing, Keming Luo
Summary: The mechanisms underlying long-term complete submergence tolerance in S. variegata involve enhanced oxidative stress responses, strengthened ethylene and ABA signaling, synthesis of raffinose family oligosaccharides, unsaturated fatty acids, and specific stress-related amino acids, which help protect the plants from submergence damage and contribute to their recovery after desubmergence. Additionally, activation of cell wall reorganization and phenylpropanoid metabolic processes may play a role in the long-term submergence tolerance of S. variegata, with transcription factors like MYB responding continuously to submergence and genes related to oxidative stress tolerance specifically expressing after desubmergence.
Article
Agronomy
Tomas Byrne, James Grant, Petra Kock-Appelgren, Lena Forster, Thibauld Michel, Alexandra Miricescu, William T. B. Thomas, Emmanuelle Graciet, John Spink, Carl K. Y. Ng, Susanne Barth
Summary: Global climate change is causing increased rainfall in Northern Europe, leading to more field flooding and impacting crop yield. Researchers evaluated 403 winter barley cultivars for waterlogging tolerance and identified sensitive and tolerant cultivars. Variability in cultivar responses to waterlogging stress was observed in multi-season field trials, prompting the development of an enhanced phenotyping method to better assess cultivars' responses under controlled conditions.
EUROPEAN JOURNAL OF AGRONOMY
(2022)
Article
Multidisciplinary Sciences
Chih-Cheng Lin, Wan-Jia Lee, Cyong-Yu Zeng, Mei-Yi Chou, Ting-Jhen Lin, Choun-Sea Lin, Meng-Chiao Ho, Ming-Che Shih
Summary: Most rice cultivars cannot survive under prolonged submergence, but some cultivars with the SUB1A-1 allele are highly tolerant. SUB1A-1 interacts with ADA2b-GCN5 acetyltransferase complex and phosphorylation of SUB1A-1 enhances this interaction. ADA2b and GCN5 expression is induced under submergence, suggesting their roles in response to submergence stress. The results suggest that phospho-SUB1A-1 recruits the ADA2-GCN5 acetyltransferase complex to modify chromatin structure and activate gene expression, enhancing rice submergence tolerance.
