Article
Plant Sciences
German Dario Ahumada, Eva Maria Gomez-alvarez, Matteo Dell'Acqua, Iris Bertani, Vittorio Venturi, Pierdomenico Perata, Chiara Pucciariello
Summary: Flooding caused by heavy rainfall and poor soil drainage can negatively affect plant germination and seedling establishment. Rice, however, has unique strategies, such as fast elongation of coleoptiles, to cope with flooding. Microorganisms can contribute to rice health by promoting growth and protecting against stress. A metagenomic analysis of the microbiome during rice germination under submergence revealed distinct compositions of microbiota in different rice varieties, with Arborio seeds showing the development of long coleoptiles. The isolated bacteria were found to have starch hydrolyzing and indole-related compound production abilities under hypoxia. Inoculating these bacteria into submerged rice seeds showed a genotype-dependent response. These findings highlight the importance of endophytic bacteria in promoting rice seedling establishment during flooding.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Mutasim Billah, Sumon Karmakar, Fahmida Begum Mina, Md. Nazmul Haque, Md. M. Rashid, Md. Faruk Hasan, Uzzal Kumar Acharjee, Mamunur Rashid Talukder
Summary: The study demonstrates that LPDBD (Ar + Air) plasma treatment enhances seed germination, seedling growth, and antioxidant enzyme activity in rice plants. Different processing times and gases used affect plant growth, with 6min, 8min, and 10min treatments significantly increasing H2O2 levels in leaves and roots.
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
(2021)
Article
Plant Sciences
Yunshuai Huang, Jiawei Song, Qixian Hao, Changling Mou, Hongming Wu, Fulin Zhang, Ziyan Zhu, Ping Wang, Tengfei Ma, Kai Fu, Yaping Chen, Thanhliem Nguyen, Shijia Liu, Ling Jiang, Jianmin Wan
Summary: Seed dormancy is a critical trait that prevents seed germination at the wrong time or under unsuitable conditions, and the regulation of seed dormancy in rice is not fully understood. In this study, a weak seed dormancy mutant wsd1 was characterized, and it was found that WSD1, an aminotransferase protein, plays a role in regulating seed dormancy by balancing the ABA and GA pathways. The findings provide insights into the molecular mechanisms underlying seed dormancy in rice.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Plant Sciences
Haoxuan Li, Xiaozheng Li, Guanjie Wang, Jianhua Zhang, Guanqun Wang
Summary: This study provides insights into the physiological characteristics and genetic regulation landscape of early seed germination in rice. It identifies key points and genes involved in early seed germination, including differentially expressed genes in starch and sucrose metabolism pathway, transcription factors, and protein interactions.
Article
Soil Science
Sebastian Blunk, Jennifer Bussell, Debbie Sparkes, Martine I. de Heer, Sacha J. Mooney, Craig J. Sturrock
Summary: Different tillage operations significantly impact seed-soil contact, but differences in seedbed porosity do not lead to significant differences in seed-soil contact and subsequent establishment.
SOIL & TILLAGE RESEARCH
(2021)
Article
Plant Sciences
Yuwei Wang, Yongrong Liao, Changqian Quan, Yaqi Li, Songjin Yang, Chuan Ma, Yuhan Mo, Shiwei Zheng, Wei Wang, Zhengjun Xu, Lihua Li, Zhengjian Huang, Jianqing Zhu, Xiaomei Jia, Xiaoying Ye, Zhiyuang Yang, Yongjian Sun, Huainian Liu, Rongjun Chen
Summary: In this study, a rice C2H2-type zinc finger protein, OsZFP15, was found to play a crucial role in seed germination and abiotic stress response. OsZFP15 was induced by ABA and various abiotic stresses, promoting ABA catabolism and accelerating seed germination. Additionally, OsZFP15 was involved in promoting reactive oxygen species production and improving salt and drought tolerance.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Plant Sciences
Yingchun Su, Zhonghao Liu, Jiahui Sun, Chenglai Wu, Yan Li, Chunqing Zhang, Linmao Zhao
Summary: This study identified and analyzed ZmAQPs and determined their expression patterns during seed germination and early seedling development. It found that ZmTIP3-1 improved seed vigor and played a positive role in seed germination and seedling growth. These findings provide valuable insights into the function and regulation of ZmAQPs.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Min Xiong, Lingyi Chu, Qianfeng Li, Jiawen Yu, Yihao Yang, Peng Zhou, Yong Zhou, Changquan Zhang, Xiaolei Fan, Dongsheng Zhao, Changjie Yan, Qiaoquan Liu
Summary: The study revealed that gibberellin and brassinosteroid synergistically regulate seed germination and post-germination growth in rice. Both hormones induced the expression of glutelin proteins and encoding genes, promoting glutelin mobilization and degradation to facilitate the germination process and embryo growth.
Article
Plant Sciences
Jiameng Chen, Zeyan Jin, Longyi Xiang, Yanyan Chen, Jie Zhang, Jiayi Zhao, Fudeng Huang, Yongfeng Shi, Fangmin Cheng, Gang Pan
Summary: This study investigated the impact of ethanol on reactive oxygen species (ROS), superoxide dismutase (SOD) activities, and hormone balance during rice seed germination. The results showed that ethanol inhibited seed germination by suppressing SOD activities, resulting in reduced H2O2 levels in rice germinating seed embryos. Ethanol also regulated ABA and GA levels in embryos, leading to disharmonizing GA/ABA balance. Additionally, ethanol promoted ABA signaling by upregulating ABA receptor genes and ABA-responsive element (ABRE)-binding protein/ABRE-binding factors.
JOURNAL OF PLANT PHYSIOLOGY
(2023)
Editorial Material
Plant Sciences
Galina Smolikova, Sergei Medvedev
Summary: The transition from seed to seedling is a crucial stage in the life cycle of plants, involving tissue hydration, mobilization of nutrients, and activation of metabolic activity in seeds. This process requires extensive reprogramming of genetic, epigenetic, and hormonal switches, leading to the activation of vegetative growth genes and silencing of seed maturation genes.
Article
Biochemistry & Molecular Biology
Yonggang He, Menghao Zhu, Zhihui Li, Shan Jiang, Zijun He, Shuang Xu, Xiangsong Chen, Zhongli Hu, Zhihong Zhang
Summary: The study showed that IPA1 negatively regulates seed germination and early seedling growth in rice by interfering with starch metabolism through the GA and WRKY pathways.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Agronomy
Senlin Xiao, Tianjun Xu, Yuandong Wang, Jinfeng Xing, Ronghuan Wang, Aiguo Su, Shuaishuai Wang, Wei Song, Jiuran Zhao
Summary: This study found that cold-tolerant maize varieties have higher germination rates and growth potential under low temperature conditions, with lower hydrogen peroxide content and higher activity of enzymes related to AsA-GSH recycling. Transcription profile analysis revealed increased expression of ZmVTC2 gene in cold-tolerant varieties, suggesting coordinated improvement of AsA biosynthesis and AsA-GSH recycling can increase total antioxidant capacity to alleviate oxidative stress during maize seed germination under low temperature.
Article
Biology
Ahmed El Moukhtari, Nadia Lamsaadi, Sandrine Lebreton, Mohammed Mouradi, Cecile Cabassa, Pierre Carol, Arnould Savoure, Mohamed Farissi
Summary: This study found that salt stress significantly reduced the germination ability of alfalfa seeds, but exogenous application of silicon can alleviate the negative effects of salt stress on seed germination and improve seedling growth by reducing oxidative stress and balancing ion concentrations. Therefore, exogenous silicon can be a promising approach to improve alfalfa seed germination under salt stress.
Review
Plant Sciences
Shubhpriya Gupta, Karel Dolezal, Manoj G. Kulkarni, Ervin Balazs, Johannes Van Staden
Summary: The application of biostimulants is an innovative and promising strategy to improve crop productivity by promoting seed germination. This technique is considered simple, beneficial, and sustainable. However, the mechanisms involved in regulating seed germination and seedling establishment by non-microbial biostimulants are still unclear.
PLANT GROWTH REGULATION
(2022)
Article
Plant Sciences
Shuang Wang, Wanning Liu, Yong He, Tosin Victor Adegoke, Jiezheng Ying, Xiaohong Tong, Zhiyong Li, Liqun Tang, Huimei Wang, Jian Zhang, Zhihong Tian, Yifeng Wang
Summary: This study identified bZIP72 as a positive regulator of seed germination under submergence in rice, enhancing both submerged seed germination and coleoptile elongation. Through binding to the promoter of alcohol dehydrogenase 1 (ADH1) and enhancing its activity, bZIP72 increases the production of energy reserves for alcoholic fermentation and glycolysis, ultimately conferring tolerance to submergence.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
