배추 GROWTH-REGULATING FACTOR 유전자 발현이 유채 기관크기에 미치는 영향

• 영문명: Effects of Overexpression of Brassica rapa GROWTH-REGULATING FACTOR Genes on B. napus Organ Size
• 발행기관: 한국육종학회
• 저자명: 홍준기(Joon Ki Hong) 서은정(Eun Jung Suh) 이승범(Seung-Bum Lee) 윤혜진(Hye-Jin Yoon) 이연희(Yeon-Hee Lee)
• 간행물 정보: 『한국육종학회지』Vol.50 No.4, 378~386쪽, 전체 9쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2018.12.30

영문 초록

GROWTH-REGULATING FACTOR (GRF) genes encode plant-specific transcription factors and play critical roles in regulating the growth and development of lateral organs. In order to explore the agricultural potential of Brassica rapa GRF genes (BrGRFs), we constructed two BrGRF-overexpressing B. napus plants (BrGRF3-1OX and -9OX). BrGRF3-1OX and -9OX developed larger cotyledons, leaves, and seeds than the wild type. The increased organs’ sizes were due to increases in cell number, but not due to cell size alterations. RT-PCR analysis revealed that BrGRFs regulated the expression of a wide range of genes that are involved in gibberellin-, auxin-, cell division-related growth processes. Taken together, our data indicate that BrGRFs act as positive regulators of B. napus growth, thus raising the possibility that they may serve as a useful genetic source for crop improvement with respect to organ size and seed production.

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키워드

Cell division Cell number GROWTH-REGULATING FACTOR Organ size Transcription factor