Review
Biochemistry & Molecular Biology
Hao Wu, Qi He, Quan Wang
Summary: This paper reviews the recent research progress on rice seed shattering, including the physiological basis, morphological and anatomical characteristics, inheritance and QTL/gene mapping, molecular mechanism, application of seed-shattering genes, and the relationship with domestication.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Hong Lang, Yuting He, Fengcheng Li, Dianrong Ma, Jian Sun
Summary: The study revealed that ABA contributes to seed shattering and transiently cooperates with other hormones, triggering a hormone imbalance that leads to the downstream activation of the AZ.
PLANT GROWTH REGULATION
(2021)
Article
Biochemistry & Molecular Biology
Yan-Ning Xie, Ting Yang, Bin-Tao Zhang, Qian-Qian Qi, An-Ming Ding, Lian-Guang Shang, Yu Zhang, Qian Qian, Zhong-Feng Zhang, Ning Yan
Summary: The loss of seed shattering is a crucial event in crop domestication, and understanding the genetic mechanisms behind it can help reduce yield loss in crop production. This study identified and analyzed the BELL family of transcription factor-encoding genes in Chinese wild rice for the first time. Two genes, ZlqSH1a and ZlqSH1b, were identified as key candidates involved in seed shattering in Z. latifolia. These genes regulate the development of the abscission layer and enhance seed shattering in rice. Transcriptome sequencing revealed differentially expressed genes related to seed shattering between the wild type and transgenic plants.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biotechnology & Applied Microbiology
Jing Ning, Wei He, Linhua Wu, Leqin Chang, Min Hu, Yongcai Fu, Fengxia Liu, Hongying Sun, Ping Gu, Marie-Noelle Ndjiondjop, Chuanqing Sun, Zuofeng Zhu
Summary: African cultivated rice was domesticated from its wild progenitor species about 3000 years ago. Seed shattering is a major constraint on grain production in African cultivated rice, causing significant losses during harvest. Understanding the regulation of seed shattering can help improve harvesting efficiency in African cultivated rice.
PLANT BIOTECHNOLOGY JOURNAL
(2023)
Article
Plant Sciences
Xinyong Li, Wei Sheng, Qianzhen Dong, Rui Huang, Rongshu Dong, Guodao Liu, Xipeng Ding, Jingwen Zhang
Summary: Pigeon pea, a perennial leguminous plant, has high potential as a forage and pharmaceutical plant in subtropical and tropical areas. This study found that fertile tiller number is crucial for increasing the seed yield of pigeon pea. The number of vascular bundle cells and bundle area are significant factors affecting seed shattering, and cellulase and polygalacturonase are involved in the dehiscence process. This research provides a foundation for further molecular studies to enhance pigeon pea seed yield.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Xin Xiao, Mengjiao Zhu, Yishan Liu, Jingru Zheng, Yiping Cui, Candong Xiong, Jiangjiang Liu, Jun Chen, Hongwei Cai
Summary: In this study, the seed shattering process in sorghum was investigated by examining the phenotypes of sorghum germplasm and analyzing the histology of the abscission zone. Through gene co-expression analysis, candidate genes involved in hormone signal transmission, cell wall modification and degradation, and lignin synthesis were identified. These findings provide insights into the understanding of the seed shattering process in sorghum.
Article
Biochemistry & Molecular Biology
Hao Wu, Qi He, Bing He, Shuyi He, Longjun Zeng, Longbo Yang, Hong Zhang, Zhaoran Wei, Xingming Hu, Jiang Hu, Yong Zhang, Lianguang Shang, Suikang Wang, Peng Cui, Guosheng Xiong, Qian Qian, Quan Wang
Summary: This study demonstrates the importance of gibberellic acid (GA) in regulating seed shattering in rice. By increasing the GA content or response, seed shattering can be enhanced. The interaction between the repressor SLR1 and shattering-related transcription factors affects lignin biosynthesis, leading to reduced seed shattering. Moreover, modulating GA content can be useful for improving rice harvesting efficiency.
Article
Agronomy
Andrisa Balbinot, Anderson da Rosa Feijo, Marcus Vinicius Fipke, Vinicios Rafael Gehrke, Dirceu Agostinetto, Nelson Diehl Kruse, Lewis Hans Ziska, Edinalvo Rabaioli Camargo, Luis Antonio de Avila
Summary: Weedy rice, one of the most troublesome global weeds in cultivated rice, has the ability to persist and compete in rice fields due to characteristics such as seed shattering and dormancy. Research shows that rising CO2 levels can increase weedy rice growth, seed shattering, and seedbank longevity, potentially having negative consequences for rice production.
Article
Agronomy
Fabrice Ntakirutimana, Yiyang Wan, Wenhui Liu, Wengang Xie
Summary: Removing awns from Siberian wildrye plants significantly reduced seed yield per plant but increased seeds per inflorescence, with similar effects observed under different growing conditions. This suggests that awns play a crucial role in seed production of wildrye grass.
Article
Biology
Yu-Liang Zhang, Qi-Yu Xia, Xiao-Qi Jiang, Wei Hu, Xiao-Xue Ye, Qi-Xing Huang, Si-Bin Yu, An-Ping Guo, Bao-Rong Lu
Summary: Research shows that editing seed-shattering genes can significantly reduce seed shattering in weedy rice lines, and this phenomenon is closely related to the absence of abscission layers and reduced abscisic acid levels. Additionally, genes associated with ABA biosynthesis, signaling transduction, and cell-wall hydrolysis were found to be downregulated in the gene-edited weedy rice lines. These findings provide insights into the mechanisms of reduced seed shattering and have practical applications for mitigating the environmental impacts of transgene flow and controlling weedy rice infestation.
Editorial Material
Biochemistry & Molecular Biology
Melissa Emery Thompson
Summary: In species with intense male competition, females delay or accelerate puberty to moderate the risks of inbreeding and infanticide, according to a new study of wild gelada monkeys.
Editorial Material
Urology & Nephrology
Peter Sohn, Yoko Narasaki, Connie M. Rhee
Summary: This study by Keane et al. provides new data on the incidence of IDH over specific time intervals during hemodialysis treatment session, clinical parameters associated with the timing of IDH onset, and whether timing of IDH impacts survival in a nationally representative hemodialysis cohort.
KIDNEY INTERNATIONAL
(2021)
Article
Agronomy
Monrawee Fukuda, Toshiyuki Imaizumi, Akira Koarai
Summary: This study investigated the effects of temperature and water availability on seed germination of different strains of weedy rice. The results showed that the germination rate was influenced by the degree of seed dormancy, water availability, and temperature. The shallow-dormant tropical japonica-derived strawhull weedy rice exhibited germination at 10℃ and showed more synchronous germination with cultivated rice. These findings are important for predicting weedy rice infestation and designing effective control measures.
PEST MANAGEMENT SCIENCE
(2023)
Article
Multidisciplinary Sciences
Ryo Ishikawa, Cristina Cobo Castillo, Than Myint Htun, Koji Numaguchi, Kazuya Inoue, Yumi Oka, Miki Ogasawara, Shohei Sugiyama, Natsumi Takama, Chhourn Orn, Chizuru Inoue, Ken-Ichi Nonomura, Robin Allaby, Dorian Q. Fuller, Takashige Ishii
Summary: This study reveals the process of early rice domestication and demonstrates that the reduction of seed shattering is not solely controlled by the sh4 allele but requires the intervention of the qSH3 allele as well. The study also identifies the impact of qSH3 within the seed shattering gene OsSh1, which is consistent in the indica and japonica subspecies but absent in the circum-aus group of rice. Furthermore, the study shows that seed shattering alone does not significantly impact yield, but yield increases are observed with closed panicle formation controlled by SPR3 and further augmented by nonshattering conferred by integration of sh4 and qSH3 alleles.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biochemistry & Molecular Biology
Toshiyuki Imaizumi, Yoshihiro Kawahara, Gabriela Auge
Summary: Hybridization between weedy and cultivated rice can stabilize and transmit adaptive traits, such as seed dormancy. This study found that hybrid-derived weedy rice strains maintained adaptive allele combinations for seed dormancy, despite equal representation of parental weedy and cultivated rice in the genome. The hybrid-derived strains were more dormant than the parental weedy rice strains.