Double mutation of BRF1 and BRF2 leads to sterility in Arabidopsis thaliana.
Biochem Biophys Res Commun
; 516(3): 969-975, 2019 08 27.
Article
en En
| MEDLINE
| ID: mdl-31277948
ABSTRACT
The TFIIB-related factor (BRF) family plays vital roles in RNA polymerase (Pol) III transcription initiation. However, little is known about the role of BRF in plants. Here, we report BRF1 and BRF2 are involved in Arabidopsis reproduction. In this study, we generated BRF1 and BRF2 double mutant plants. We found that no homozygous double mutants of brf1brf2 were obtained when brf1 and brf2 were crossed, although brf1 and brf2 mutants individually developed and reproduced normally. Further experiments revealed that heterozygous brf1/ + brf2/ + produced abnormal pollen and had no seeds in some placentas of siliques. Genetic data derived from reciprocal crosses showed that BRF2 plays a dominant role in Arabidopsis reproduction. Taken together, a double mutation of BRF1 and BRF2 results in a high degree of aborted macrogametes and microgametes and complete failure in zygote generation, ultimately leading to sterility.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Factores de Transcripción
/
ARN Polimerasa III
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Arabidopsis
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Regulación de la Expresión Génica de las Plantas
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Proteínas de Arabidopsis
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Factor de Transcripción TFIIB
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Infertilidad Vegetal
Idioma:
En
Revista:
Biochem Biophys Res Commun
Año:
2019
Tipo del documento:
Article
País de afiliación:
China