Article
Plant Sciences
Dengji Lou, Suping Lu, Zhen Chen, Yi Lin, Diqiu Yu, Xiaoyan Yang
Summary: This study found that the OsSAPK3 gene in rice is upregulated under drought, salt, PEG, and ABA stress. This gene plays a crucial role in drought stress by affecting osmotic adjustment, ROS detoxification, and expression of ABA-dependent and ABA-independent dehydration-responsive genes. Moreover, OsSAPK3 improves rice yield by indirectly regulating tiller number and grain size.
Article
Plant Sciences
Manrong Zha, Yanhui Zhao, Yan Wang, Bingxian Chen, Zecheng Tan
Summary: Shoot branching, a crucial trait in rice, is regulated by auxins, cytokinins, and strigolactones. This study investigated the impact of different treatments on tiller and axillary bud development in rice and found that nutrient deficiency and exogenous strigolactone supply inhibit tiller outgrowth by reducing cytokinin content in the buds. The study also revealed that strigolactone promotes OsCKX gene expression in buds, indicating an antagonistic role of strigolactone with cytokinin in regulating bud outgrowth.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Niluka Nakandalage, Paul James Milham, Paul Holford, Saman Seneweera
Summary: Rice has low concentrations of nitrogen and zinc, and these concentrations are decreasing as atmospheric carbon dioxide levels rise. The study found that providing luxury levels of zinc can maintain grain nitrogen concentrations at elevated carbon dioxide levels. These findings are important for the quality and quantity of global rice supply.
Article
Agronomy
Yuping Yan, Chaoqing Ding, Guangheng Zhang, Jiang Hu, Li Zhu, Dali Zeng, Qian Qian, Deyong Ren
Summary: This article reviews the two processes of rice tiller formation and summarizes the effects of genetic factors, endogenous hormones, and exogenous environment on rice tillering. The study finds that multiple molecular mechanisms and signal pathways cooperate in regulating rice tillering and discusses future research objectives and the application of its regulatory mechanism.
Article
Agronomy
Chuanhai Shu, Feijie Li, Dongdong Liu, Jian Qin, Mingtian Wang, Yongjian Sun, Na Li, Jun Ma, Zhiyuan Yang
Summary: The study aimed to develop heading uniformity (HU) as a new comprehensive indicator by designing a representative sampling and calculation method, and exploring the relationship between HU and yield components. The results showed that HU exhibited a single-valley curve, decreasing then increasing after initial heading. Adequate HU was obtained by panicle sampling on day two or three after initial heading.
Article
Agronomy
Xing Yu, Yuan Guo, Guodong Yang, Zuolin Zhang, Yujuan Liang, Chang Zheng, Le Xu, Shen Yuan, Fei Wang, Jianliang Huang, Shaobing Peng
Summary: There is variation in the nitrogen response among different node positions of regenerated tillers in rice ratooning. Application of nitrogen significantly increased the grain yield and total nitrogen uptake of regenerated tillers in lower node.
FIELD CROPS RESEARCH
(2022)
Article
Biotechnology & Applied Microbiology
Jun Yu, Wei Xuan, Yunlu Tian, Lei Fan, Juan Sun, Weijie Tang, Gaoming Chen, Baoxiang Wang, Yan Liu, Wei Wu, Xiaolan Liu, Xingzhou Jiang, Cong Zhou, Zhaoyang Dai, Dayong Xu, Chunming Wang, Jianmin Wan
Summary: The excessive use of nitrogen fertilizers has harmful effects on the environment, but by studying the genetic regulation of nitrogen use efficiency-related genes, wheat yield and NUE can be improved. By discovering the interaction between OsNLP4 and OsNiR, and constructing NREs to enhance nitrogen assimilation, the number of tillers and yield can be significantly increased.
PLANT BIOTECHNOLOGY JOURNAL
(2021)
Article
Plant Sciences
Fu Quan Yao, Xiao Hui Li, He Wang, Yu Ning Song, Zhong Qing Li, Xing Guo Li, Xin-Qi Gao, Xian Sheng Zhang, Xiao Min Bie
Summary: TaPIN1 genes play important roles in wheat, as knock-down expression increases tiller number and grain yield per plant.
Article
Plant Sciences
Shuai Mu, Naoki Yamaji, Akimasa Sasaki, Le Luo, Binbin Du, Jing Che, Huichao Shi, Haoqiang Zhao, Sheng Huang, Fenglin Deng, Zhenguo Shen, Mary Lou Guerinot, Luqing Zheng, Jian Feng Ma
Summary: OsZIP4 is a protein involved in the transport of Zn in rice, expressed in TB and nodes, and induced under Zn deficiency. Mutations in OsZIP4 alter Zn distribution, affecting rice development and yield.
Article
Agronomy
Jennifer M. Sloan, Azzami Adam Muhamad Mujab, Jusoh Mashitah, Berahim Zulkarami, Matthew J. Wilson, Liang Su Toh, A. Jalil Nur Zahirah, Kamaruzali Afiq, Ahmad Tajuddin Asyraf, Xin-Guang Zhu, Nazmin Yaapar, Andrew J. Fleming
Summary: Tillering in rice is influenced by both genetic factors and the environment. In this study, it was found that even moderate exposure to elevated CO2 can induce tillering in rice seedlings. A cost-effective growth system was then developed to increase CO2 levels and enhance tillering, leading to increased panicle number and 1000 grain weight in mature rice plants.
Article
Agronomy
Jie Wang, Renjing Wan, Haipeng Nie, Shaowu Xue, Zhongming Fang
Summary: This study finds that OsNPF5.16 gene, a nitrate transporter gene in rice, plays an essential role in rice growth and yield. Higher expression of OsNPF5.16 is associated with increased plant weight, tiller number, and grain yield in indica cultivars compared to japonica cultivars. Overexpression of OsNPF5.16 increases nitrate content, total nitrogen content, biomass, and tiller bud length in rice. Regulating the expression of OsNPF5.16 shows potential for improving rice grain yield.
Article
Agronomy
Xiaowu Pan, Yongchao Li, Haiwen Zhang, Wenqiang Liu, Zheng Dong, Licheng Liu, Sanxiong Liu, Xinnian Sheng, Jun Min, Rongfeng Huang, Xiaoxiang Li
Summary: Plant architecture plays a crucial role in determining rice grain yield. In this study, the LTA1 gene, which controls tiller angle and yield of rice, was cloned and characterized. LTA1 encodes a chloroplast-localized protein and affects the gravity response by mediating the distribution of auxin, thereby regulating tiller angle. Disrupting the function of LTA1 leads to increased tiller angle and decreased rice yield.
Article
Agronomy
Yan Li, Yizhou He, Tian Qin, Xuelian Guo, Kun Xu, Chunxue Xu, Wenya Yuan
Summary: MicroRNAs (miRNAs) play important roles in regulating various plant processes by blocking the expression of target genes. In this study, the functional conservation and divergence of miR156 and miR529 were explored in rice. It was found that miR156 and miR529 respectively function dominantly in the vegetative stage and reproductive stage to control rice growth and development by regulating the accumulation of OsSPL14.
Article
Plant Sciences
Takayuki Fujita, Marcel Pascal Beier, Mayumi Tabuchi-Kobayashi, Yoshitaka Hayatsu, Haruka Nakamura, Toshiko Umetsu-Ohashi, Kazuhiro Sasaki, Keiki Ishiyama, Emiko Murozuka, Mikiko Kojima, Hitoshi Sakakibara, Yuki Sawa, Akio Miyao, Toshihiko Hayakawa, Tomoyuki Yamaya, Soichi Kojima
Summary: This study investigates the unique physiological roles of GS1;3 in the early stage of seed germination and grain filling under N deficient conditions in rice, and its impact on rice growth and yield.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Mingjuan Li, Hongye Li, Qidong Zhu, Dong Liu, Zhen Li, Haifei Chen, Jinsong Luo, Pan Gong, Abdelbagi M. Ismail, Zhenhua Zhang
Summary: Sugar transporter proteins (STPs) play critical roles in regulating plant stress tolerance, growth, and development. However, the role of STPs in regulating crop yield is poorly understood. This study elucidates the mechanism by which knockout of the sugar transporter OsSTP15 enhances grain yield via increasing the tiller number in rice.