Proper division plane orientation and mitotic progression together allow normal growth of maize.
Proc Natl Acad Sci U S A
; 114(10): 2759-2764, 2017 03 07.
Article
em En
| MEDLINE
| ID: mdl-28202734
ABSTRACT
How growth, microtubule dynamics, and cell-cycle progression are coordinated is one of the unsolved mysteries of cell biology. A maize mutant, tangled1, with known defects in growth and proper division plane orientation, and a recently characterized cell-cycle delay identified by time-lapse imaging, was used to clarify the relationship between growth, cell cycle, and proper division plane orientation. The tangled1 mutant was fully rescued by introduction of cortical division site localized TANGLED1-YFP. A CYCLIN1B destruction box was fused to TANGLED1-YFP to generate a line that mostly rescued the division plane defect but still showed cell-cycle delays when expressed in the tangled1 mutant. Although an intermediate growth phenotype between wild-type and the tangled1 mutant was expected, these partially rescued plants grew as well as wild-type siblings, indicating that mitotic progression delays alone do not alter overall growth. These data indicate that division plane orientation, together with proper cell-cycle progression, is critical for plant growth.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Divisão Celular
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Proteínas de Ciclo Celular
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Zea mays
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Proteínas de Arabidopsis
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Ciclina B1
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
2017
Tipo de documento:
Article