바이오에너지 작물 소재로서 자트로파의 염과 가뭄 스트레스 하에서 상반되는 생리적 특성과 아쿠아포린(JcPIP2 )의 발현

• 영문명: Conflicting Physiological Characteristics and Aquaporin (JcPIP2 ) Expression of Jatropha (Jatropha curcas L.) as a Bio-energy Crop under Salt and Drought Stresses
• 발행기관: 한국작물학회
• 저자명: 장하영(Ha-Young Jang) 이지은(Ji-Eun Lee) 장영석(Young-Seok Jang) 안성주(Sung-Ju Ahn)
• 간행물 정보: 『한국작물학회지』제56권 제3호, 183~191쪽, 전체 9쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2011.09.30

영문 초록

This study was undertaken to collect basic knowledge of Jatropha which is one of bio-energy crops, based on the understanding of physiological and molecular aspects under salt and drought conditions. The treatments were followed as: 100, 200 and 300 mM NaCl for salt stress and 5, 10, 20 and 30% PEG for drought stress for 8 days, respectively. Leaf growth, stomatal conductance, chlorophyll fluorescence and gene expression of aquaporin (JcPIP2) of Jatropha were investigated. From 2 days after treatments, plants treated with higher than 100 mM NaCl and 10% PEG respectively were significantly suppressed in leaf length, width, and stomatal conductance, but 5% PEG treatment showed that plant growth was improved more than control plant. Semi-quantitative RT-PCR analyses revealed that the JcPIP2 gene was expressed in root, stem, cotyledon and leaves. It was not detected in leaves at 200 and 300 mM NaCl treatments. However, transcripts of JcPIP2 were induced in roots and stems under salt and drought conditions compared to those of healthy plants. Therefore, it was concluded that JcPIP2 plays an important role in improving drought tolerance.

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키워드

aquaporin chlorophyll fluorescence stomatal conductance JcPIP2