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- Title
AbnormalDegradedTapetum 1 (ADT1) is required for tapetal cell death and pollen development in rice.
- Authors
Liu, Jialin; Ye, Qing; Jiang, Wenxiang; Liu, Shiqiang; Wu, Zheng; Hu, Xiafei; Wang, Xiaoqing; Zhang, Zelin; Guo, Dandan; Chen, Xiaorong; He, Haohua; Hu, Lifang
- Abstract
The timely degradation of tapetum, the innermost somatic anther cell layer in flowering plants, is critical for pollen development. Although several genes involved in tapetum development have been characterized, the molecular mechanisms underlying tapetum degeneration remain elusive. Here, we showed that mutation in AbnormalDegradedTapetum 1 (ADT1) resulted in overaccumulation of Reactive Oxygen Species (ROS) and abnormal anther development, causing earlier tapetum Programmed Cell Death (PCD) and pollen abortion. ADT1 encodes a nuclear membrane localized protein, which is strongly expressed in the developing microspores and tapetal cells during early anther development. Moreover, ADT1 could interact with metallothionein MT2b, which was related to ROS scavenging and cell death regulation. These findings indicate that ADT1 is required for proper timing of tapetum PCD by regulating ROS homeostasis, expanding our understanding of the regulatory network of male reproductive development in rice.
- Publication
Theoretical & Applied Genetics, 2024, Vol 137, Issue 7, p1
- ISSN
0040-5752
- Publication type
Article
- DOI
10.1007/s00122-024-04677-y