Article
Agronomy
Miki Ogasawara, Naoya Miyazaki, Gotaro Monden, Kenta Taniko, Sathya Lim, Masahide Iwata, Takashige Ishii, Jian Feng Ma, Ryo Ishikawa
Summary: A candidate gene responsible for higher grain zinc accumulation in rice was identified, potentially linked to a partial defect in anther dehiscence. The study highlighted the importance of balancing fertility and grain zinc levels as essential agronomic traits in rice. The results suggest that regulating the expression of specific genes involved in anther dehiscence could impact grain productivity and zinc accumulation in rice plants carrying the identified chromosomal segment.
THEORETICAL AND APPLIED GENETICS
(2021)
Article
Plant Sciences
Csaba Lantos, Mihaly Jancso, Arpad Szekely, Eva Nagy, Timea Szaloki, Janos Pauk
Summary: Doubled haploid (DH) plant production, such as anther culture (AC), is a useful tool in modern rice breeding. This study compared the effects of different combinations of plant growth regulators on callus induction in rice, and identified the best combination for in vitro green plant production.
Article
Plant Sciences
Csaba Lantos, Mihaly Jancso, Arpad Szekely, Timea Szaloki, Shoba Venkatanagappa, Janos Pauk
Summary: An efficient protocol for in vitro anther culture in rice breeding, especially for indica genotypes, was evaluated. Three different induction media (N6NDK, N(6)NDZ, Ali-1) and four plant regeneration media (mMSNBK1, MSNBK3, MSNBKZ1, MSNBKZ2) were tested to increase the efficiency of in vitro androgenesis. The production of calli and green plantlets varied among different genotypes and media combinations. Flow cytometric analyses showed that 51.89% of the acclimatized indica rice plantlets had undergone spontaneous chromosome doubling. The utilization of DH plants has been integrated into the Hungarian rice breeding program, and tetraploid lines offer potential for future research and breeding directions.
Article
Plant Sciences
Qiuqian Hu, Wencheng Wang, Qifan Lu, Jianliang Huang, Shaobing Peng, Kehui Cui
Summary: Decreased spikelet fertility in rice under high temperature is mainly caused by reduced pollen viability and anther dehiscence, leading to abnormalities in pollen and anther development. Heat-susceptible varieties are more affected by these disturbances compared to heat-tolerant varieties.
Article
Biology
Gehad M. Mohamed, Ahmed M. Amer, Neama H. Osman, Mohammed Z. Sedikc, Mona H. Hussein
Summary: Plant tissue culture technology provides a solution for meeting the commercial demand on economically important plants like rice, but the choice of gelling agents can significantly impact rice regeneration efficiency. The study showed that different gelling agents have varying effects on rice regeneration, with Gellan gum (Gelrite and Phytagel) performing superiorly in callus induction.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2021)
Article
Plant Sciences
Dan Zhou, Weifeng Shen, Yuchao Cui, Yuqin Liu, Xijun Zheng, Yan Li, Minliang Wu, Shanru Fang, Chunhong Liu, Ming Tang, Yin Yi, Mingfu Zhao, Liang Chen
Summary: The asa mutant in rice showed pleiotropic phenotypes, including reduced plant height, increased tiller number, and decreased pollen fertility. RNA-seq analysis revealed significant impacts on biological processes related to reactive oxygen species (ROS) homeostasis and salicylic acid (SA) metabolism in the asa mutant. Additionally, under boron-deficient conditions, the asa mutant and OsASA-knockout plants exhibited increased levels of SA and upregulated expression of genes related to SA biosynthesis.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Hongming Guo, Yuchao Cui, Linjuan Huang, Li Ge, Xiaorong Xu, Danyang Xue, Ming Tang, Jingsheng Zheng, Yin Yi, Liang Chen
Summary: This study identified and characterized two La proteins (OsLa1 and OsLa2) in rice, which play important roles in rice growth and development. OsLa1 modulates grain size by influencing cell expansion, while mutant OsLa2 results in thin grains and low seed-setting rate. In addition, OsLa1 and OsLa2 interact with OseIF6.1 and OsLa1 can modulate the expression of OseIF6.1.
Article
Plant Sciences
Jauhar Ali, Katrina Leslie C. Nicolas, Shahana Akther, Azerkhsh Torabi, Ali Akbar Ebadi, Corinne M. Marfori-Nazarea, Anumalla Mahender
Summary: The study showed that the improved anther culture medium A1 significantly enhanced callus induction frequency of japonica rice type, indica rice type, and hybrids of indica and japonica cross. Furthermore, A1 medium greatly improved the green plantlet regeneration efficiency of the hybrids CXY6, CXY24, and Y2, demonstrating its potential for producing doubled haploid rice plants for different breeding programs.
Article
Multidisciplinary Sciences
Byomkesh Dash, Sudhansu Sekhar Bhuyan, Sandeep Kumar Singh, Manjusha Chandravani, Nibedita Swain, Prachitara Rout, Jawahar Lal Katara, C. Parameswaran, B. N. Devanna, Sanghamitra Samantaray
Summary: Rice is crucial for global food security. This study developed an androgenic protocol for indica rice, contributing to yield improvement.
Article
Biochemistry & Molecular Biology
Xingjie Zhu, Shengzhong Zhang, Yaping Chen, Changlin Mou, Yunshuai Huang, Xi Liu, Jingli Ji, Jiangfeng Yu, Qixian Hao, Chunyan Yang, Mengying Cai, Thanhliem Nguyen, Weihan Song, Ping Wang, Hui Dong, Shijia Liu, Ling Jiang, Jianmin Wan
Summary: This study revealed the importance of DGS1 in regulating grain size in rice, and demonstrated the regulatory role of OsBZR1 in this process. This provides important insights into the molecular mechanisms of grain size determination in rice.
PLANT MOLECULAR BIOLOGY
(2021)
Article
Environmental Sciences
Jing Ma, Muhammad Aqeel, Noreen Khalid, Atia Nazir, Fahad Mohammed Alzuaibr, Amina A. M. Al-Mushhin, Othman Hakami, Muhammad Faisal Iqbal, Fu Chen, Saad Alamri, Mohamed Hashem, Ali Noman
Summary: This study investigated the effects of different doses of polystyrene (PS) and polyvinyl chloride (PVC) microplastics (MPs) on the growth, ionic homeostasis, and antioxidant metabolism of rice plants. Results showed that PVC-MPs accumulation had a more devastating impact on rice growth and metabolism compared to PS-MPs, with D-3 and D-6 being the most harmful treatments. Further research is recommended to fully understand the influence of different sized MPs on food safety.
Article
Agronomy
Man Zhang, Kaixuan Feng, Xinde Dong, Yongjin Zhou, Jinhua Chen, Bin Teng, Zhong Li, Lantian Ren, Wenge Wu
Summary: This study analyzes the impact of high-temperature stress on rice yields by analyzing meteorological data from Anhui Province. It identifies five indica rice varieties with strong high-temperature tolerance suitable for planting in the middle and lower reaches of the Yangtze River.
Article
Engineering, Environmental
Chao-Qun Zhou, Chen-Hua Lu, Lei Mai, Lian-Jun Bao, Liang-Ying Liu, Eddy Y. Zeng
Summary: The study revealed that polystyrene nanoparticles (PS-NPs) were taken up by rice roots, leading to oxidative stress response in the roots and affecting root length and lateral root numbers. Additionally, PS-NPs treatment activated carbon metabolism in rice roots while inhibiting jasmonic acid and lignin biosynthesis.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Agronomy
Yujia Leng, Lianmin Hong, Tao Tao, Qianqian Guo, Qingqing Yang, Mingqiu Zhang, Xinzhe Ren, Sukui Jin, Xiuling Cai, Jiping Gao
Summary: In this study, a population of chromosome segment substitution lines (CSSLs) derived from a cross between two different types of rice was used to analyze multiple traits of brown rice. The results showed significant correlations among most of the brown rice traits and identified 61 QTLs for these traits under three environments. Additionally, 30 pairs of gene interactions were determined for specific brown rice traits, providing further understanding of the genetic basis of brown rice traits and facilitating genetic improvement of rice yield and quality through breeding.
Article
Multidisciplinary Sciences
Chao Wu, Kehui Cui, Qian Li, Liuyong Li, Wencheng Wang, Qiuqian Hu, Yanfeng Ding, Ganghua Li, Shah Fahad, Jianliang Huang, Lixiao Nie, Shaobing Peng
Summary: Different rice cultivars exhibit varying levels of tolerance to heat stress during different reproductive stages, with heat-tolerant varieties demonstrating stable high grain yields and heat-sensitive varieties maintaining stable low grain yields. The development of heat-tolerant varieties should focus on breeding comprehensive tolerance to heat stress across all reproductive stages to address the unpredictable occurrence of future heat events.
SCIENTIFIC REPORTS
(2021)