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
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.
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
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
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
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
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
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
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
Mao W. Guo, Lin Zhu, Hong Y. Li, Wan P. Liu, Zi N. Wu, Cheng H. Wang, Lei Liu, Zhi Y. Li, Jun Li
Summary: This study revealed the mechanism of pod shattering in Medicago ruthenica, which involves the degradation of the middle lamella and the detachment of lignified cells triggered by physical forces. Increased PG and CE activities play a crucial role in the shatter-susceptible genotype, while the expression of auxin biosynthesis-related genes is negatively associated with pod dehiscence.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
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
Hangqin Liu, Xiaojian Fang, Leina Zhou, Yan Li, Can Zhu, Jiacheng Liu, Yang Song, Xing Jian, Min Xu, Li Dong, Zhongwei Lin
Summary: Loss of seed shattering during foxtail millet domestication was caused by an 855-bp Harbinger transposable element insertion in the sh1 gene. The insertion prevents transcription of the zinc finger domain, leading to the loss of natural seed shattering. The sh1 gene functions as a transcription repressor and represses genes associated with lignin synthesis in the abscission zone.
MOLECULAR BIOLOGY AND EVOLUTION
(2022)
Article
Biodiversity Conservation
Xiang Li, Shulin Zhang, Ignacio Amaro-Blanco, Sherin Perera, Nikhil Shirish Khandekar, Daniel Lowey, Maria Dolores Osuna, Ana L. Caicedo
Summary: This article investigates the origin of weedy rice in Spain and Portugal and finds that it primarily evolves from locally grown rice varieties. The study suggests the need for management strategies to prevent the evolution of weedy rice from cultivated ancestors. Understanding the origins of weedy rice is crucial in developing more effective weed management strategies.
PLANTS PEOPLE PLANET
(2022)
Article
Biochemistry & Molecular Biology
Shohei Sugiyama, Motoki Sakuta, Yuki Tsujimura, Yudai Yamaguchi, Than Myint Htun, Chizuru Inoue, Koji Numaguchi, Takashige Ishii, Ryo Ishikawa
Summary: Asian rice (Oryza sativa) was domesticated from O. rufipogon, and specific loci, such as qSH3 and sh4, were selected to reduce seed shattering in both japonica and indica rice cultivars. However, qSH3 and sh4 alone cannot fully explain the degree of seed shattering in indica cultivars. This study identified two novel loci, qCSS2 and qCSS7, which contribute to reduced seed shattering in indica cultivar IR36. The control of these loci may be specific to indica cultivars and can provide insights into rice domestication history and yield improvement.
MOLECULAR GENETICS AND GENOMICS
(2023)
Review
Plant Sciences
Aniruddha Maity, Amrit Lamichaney, Dinesh Chandra Joshi, Ali Bajwa, Nithya Subramanian, Michael Walsh, Muthukumar Bagavathiannan
Summary: Seed shattering is a natural phenomenon in wild and weedy plant species, controlled by genetics but influenced by environmental conditions and management practices. While undesirable in domesticated crops, it serves as a crucial survival mechanism for weeds, aiding in efficient seed dispersal and soil seedbank development. Weed species have evolved variations in seed shattering as an adaptation to changing management regimes, presenting challenges for agricultural weed management but also opportunities for innovative approaches such as harvest weed seed control.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Plant Sciences
Takeshi Izawa
CURRENT OPINION IN PLANT BIOLOGY
(2015)
Article
Biochemistry & Molecular Biology
Tetsuo Oikawa, Hiroaki Maeda, Taichi Oguchi, Takuya Yamaguchi, Noriko Tanabe, Kaworu Ebana, Masahiro Yano, Takeshi Ebitani, Takeshi Izawa
Article
Biochemistry & Molecular Biology
Jun Matsuzaki, Yoshihiro Kawahara, Takeshi Izawa
Article
Plant Sciences
Yasue Nemoto, Yasunori Nonoue, Masahiro Yano, Takeshi Izawa
Article
Plant Sciences
Yasue Nemoto, Kiyosumi Hori, Takeshi Izawa
JOURNAL OF EXPERIMENTAL BOTANY
(2018)
Article
Plant Sciences
Hironori Itoh, Kaede C. Wada, Hiroaki Sakai, Kyohei Shibasaki, Shuichi Fukuoka, Jianzhong Wu, Jun-ichi Yonemaru, Masahiro Yano, Takeshi Izawa
Review
Biochemistry & Molecular Biology
Hironori Itoh, Takeshi Izawa
Review
Plant Sciences
Takeshi Izawa
PLANT CELL AND ENVIRONMENT
(2012)
Article
Plant Sciences
Kyoko Ikeda-Kawakatsu, Masahiko Maekawa, Takeshi Izawa, Jun-Ichi Itoh, Yasuo Nagato
Article
Plant Sciences
Hironori Itoh, Yuri Tanaka, Takeshi Izawa
PLANT AND CELL PHYSIOLOGY
(2019)
Article
Plant Sciences
Takeshi Izawa
Summary: Using Arabidopsis thaliana as a model system has revealed various molecular mechanisms controlling flowering, including photoperiod, vernalization, autonomous, and gibberellin pathways. Recent studies suggest stress signals may be regulated by hormonal control of flowering. Comparing the rice flowering pathway with that of Arabidopsis thaliana has provided insights into the diversity of molecular mechanisms in plant species.
Article
Plant Sciences
Asanga Deshappriya Nagalla, Noriko Nishide, Ken-ichiro Hibara, Takeshi Izawa
Summary: This study found that photoperiodic flowering in rice is enhanced under low-temperature conditions, while rapid reduction of Ghd7 messenger RNA under high-temperature conditions can lead to an increase in the mRNA of a rice florigen gene, RFT1. Multiple temperature-sensing mechanisms can affect photoperiodic flowering in rice.
PLANT AND CELL PHYSIOLOGY
(2021)
Article
Plant Sciences
Hayato Yoshioka, Keiko Kimura, Yuko Ogo, Namie Ohtsuki, Ayako Nishizawa-Yokoi, Hironori Itoh, Seiichi Toki, Takeshi Izawa
Summary: Flowering in plants is an important biological process that determines the timing of reproduction based on photoperiod. Genes like Ghd7 and Hd1 in rice play different roles under long and short day lengths, and real-time monitoring of their protein products is required to understand the accurate photoperiod recognition at a molecular level.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Plant Sciences
Takeshi Izawa
Summary: This article discusses the current status of crop domestication research, stating that DNA sequences can provide information about the history of crop domestication and breeding process, and genome data can help explain genome-wide changes. However, there are still difficulties in accurately understanding the quantitative trait genes involved in the domestication process, and there is a gap between archaeological hypotheses and DNA variations.
PLANT AND CELL PHYSIOLOGY
(2022)
Article
Plant Sciences
Ryo Okada, Yasue Nemoto, Naokuni Endo-Higashi, Takeshi Izawa