Abnormal Degraded Tapetum 1 (ADT1) is required for tapetal cell death and pollen development in rice.
Theor Appl Genet
; 137(7): 170, 2024 Jun 24.
Article
em En
| MEDLINE
| ID: mdl-38913206
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 Abnormal Degraded Tapetum 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.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
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Pólen
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Oryza
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Espécies Reativas de Oxigênio
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Regulação da Expressão Gênica de Plantas
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Mutação
Idioma:
En
Revista:
Theor Appl Genet
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China