Article
Plant Sciences
Walid Raafat Nakhla, Wenqiang Sun, Kai Fan, Kang Yang, Chaopu Zhang, Sibin Yu
Summary: The study identified QTLs related to salt tolerance in rice using a BIL population. ACC9 showed higher germination rate but more repressed seedling growth under salt stress. These major loci will help improve salt-tolerance in rice through genome-breeding programs.
Article
Agronomy
Hualong Liu, Luomiao Yang, Shanbin Xu, Ming-Jie Lyu, Jingguo Wang, Huan Wang, Hongliang Zheng, Wei Xin, Jun Liu, Detang Zou
Summary: The study identified a novel cold tolerance gene qCT7, which increases seedling cold tolerance in rice. Through the measurement of cold-responsive traits, the key genomic regions associated with cold tolerance were identified, and the significant role of the OsWRKY115 gene in cold response was determined.
THEORETICAL AND APPLIED GENETICS
(2022)
Article
Multidisciplinary Sciences
Raeann Goering, Siri Larsen, Jia Tan, James Whelan, Irina Makarevitch
Summary: Maize is a cold sensitive crop that requires cold tolerance for early sowing and improved crop yield. Different maize inbreds exhibit varying levels of cold tolerance, and genetic analysis using a recombinant inbred line population identified two QTLs associated with cold stress response. Further investigation revealed candidate genes related to cold stress response, such as those involved in auxin and gibberellin response, as well as general abiotic stress response.
Article
Agronomy
Luomiao Yang, Lei Lei, Jingguo Wang, Hongliang Zheng, Wei Xin, Hualong Liu, Detang Zou
Summary: The qCTB7 gene was identified as being associated with cold tolerance at the booting stage in rice. The study found that overexpression of qCTB7 improved cold tolerance and yield, while knockout of the gene resulted in anther and pollen failure under cold stress. This research is significant for improving rice production and cold tolerance in high-latitude regions.
THEORETICAL AND APPLIED GENETICS
(2023)
Article
Plant Sciences
Muhammad Ibrar Khan, Zarnishal Kainat, Saman Maqbool, Ambreen Mehwish, Suhaib Ahmad, Hafiz Muhammad Suleman, Zahid Mahmood, Mohsin Ali, Abdul Aziz, Awais Rasheed, Huihui Li
Summary: Increasing global temperature negatively affects crop growth and yield, especially at the seedling stage. This study characterized wheat cultivars in Pakistan under high temperature stress and identified loci associated with heat tolerance. The research identified specific haplotypes and quantitative trait nucleotides (QTNs) linked to heat tolerance. These findings can guide breeding efforts to develop heat-tolerant wheat varieties.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Caijing Li, Baoli Zou, Changsheng Lu, Guiting Song, Qiang Gao, Peng Wang, Guangliang Wu, Wei Jin, Hui Yin, Qin Cheng, Yanning Wang, Qi Zhong, Shiying Huang, Mengmeng Yang, Tao Huang, Haohua He, Jianmin Bian
Summary: This study assessed the low temperature germinability (LTG) of rice using six different indices and conducted a genome-wide association study (GWAS) on a natural population of 211 rice accessions. The researchers identified 18 QTL related to LTG, including 7 novel ones. Additionally, they identified 14 candidate genes that may play a role in cold tolerance. These findings are important for improving cold tolerance in rice cultivars.
Review
Agronomy
Rakesh Kumar Singh, Suneetha Kota, Timothy J. Flowers
Summary: Reproductive stage salinity tolerance is crucial for rice yield under stress, but research has mainly focused on seedling stage tolerance. Despite different sensitivities at various growth stages, there is poor correlation between sensitivity at seedling and reproductive stages. Further studies on reproductive stage tolerance in rice are necessary to enhance future productivity.
THEORETICAL AND APPLIED GENETICS
(2021)
Article
Biochemistry & Molecular Biology
Jae-Ryoung Park, Yoon-Hee Jang, Eun-Gyeong Kim, Sang-Sun Hur, Kyung-Min Kim, Deyong Ren
Summary: In this study, QTLs and candidate genes related to rice plant height regulation were identified, which can provide information and foundation for marker-assisted selection and breeding.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Horticulture
Caixia Li, Shaoyun Dong, Diane M. Beckles, Xiaoping Liu, Dongrang Liu, Han Miao, Shengping Zhang, Xingfang Gu
Summary: In this study, a key gene region qCT6.1 associated with cucumber seedling cold tolerance was identified, and a potential candidate gene CsaV3 6G042810 was speculated. These findings provide important insights into the genetic basis of cucumber cold tolerance and have implications for molecular breeding.
SCIENTIA HORTICULTURAE
(2022)
Review
Agronomy
Cyprien Ndikuryayo, Alexis Ndayiragije, Newton Kilasi, Paul Kusolwa
Summary: This review summarizes the progress in breeding for aroma and drought tolerance in rice, highlighting the successful introgression of major quantitative trait loci for drought tolerance into aromatic varieties. However, more research is needed to understand the detailed performance of developed lines and the release of aromatic drought-tolerant rice varieties.
Article
Genetics & Heredity
Fan Xu, Jiuyou Tang, Shengxing Wang, Xi Cheng, Hongru Wang, Shujun Ou, Shaopei Gao, Boshu Li, Yangwen Qian, Caixia Gao, Chengcai Chu
Summary: Preharvest sprouting seriously threatens crop production worldwide. In this study, a gene called SD6 was identified to control seed dormancy by regulating the degradation and synthesis of ABA. The weak-dormancy allele of SD6 is common in cultivated rice but undergoes negative selection in wild rice. Genome editing experiments demonstrated that SD6 is a useful breeding target for alleviating preharvest sprouting in cereals under field conditions.
Article
Plant Sciences
Shuhua Yang
Summary: As rice is sensitive to cold stress due to its origins in tropical or subtropical areas, understanding the physiological and molecular mechanisms of rice responses to cold stress can aid in developing cold-tolerant and high-yielding rice varieties.
JOURNAL OF PLANT PHYSIOLOGY
(2022)
Article
Agronomy
Tae-Ho Ham, Yebin Kwon, Yoonjung Lee, Jisu Choi, Joohyun Lee
Summary: In this study, a genome-wide association study of cold tolerance in rice seedlings identified four quantitative trait loci on chromosomes 1, 4, and 5. Candidate genes within these QTLs were discovered, including Os01g0357800, Os05g0171300, and Os05g0400200, which could potentially affect cold tolerance in rice. Further evaluation of these genes may lead to the development of cold-tolerant rice varieties in breeding programs.
Article
Plant Sciences
Mohammed Abdelaziz Sayed, Rasha Tarawneh, Helmy Mohamed Youssef, Klaus Pillen, Andreas Boerner
Summary: The study used wild barley introgression lines to identify QTL alleles improving germination and seedling growth under salinity stress, with a significant number of QTL alleles contributing to salt tolerance. In addition, several exotic QTL alleles were successfully validated in the wild barley introgression lines, demonstrating their effectiveness in improving salinity tolerance in barley.
Article
Plant Sciences
Yongbin Qi, Patcharaporn Summat, Natjaree Panyawut, Kannika Sikaewtung, Khanittha Ditthab, Keasinee Tongmark, Sriprapai Chakhonkaen, Numphet Sangarwut, Thiwawan Wasinanon, Kanokwan Kaewmungkun, Amorntip Muangprom
Summary: Rice is susceptible to cold stress at the seedling stage, affecting growth and yield. Cold tolerance in rice accessions was evaluated, and genotypic assays for three markers were developed. Two SNP markers for COLD1 and LOC_Os10g34840 were effective using agarose gel, but had limitations in predicting cold tolerance. An insertion/deletion variant in the NAC6 gene was identified as a novel cold tolerance marker. The combination of the three markers was the most effective in predicting highly cold-tolerant accessions, suggesting its superiority for marker-assisted breeding.