인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
학술저널
Full-text AI
오류 신고하기해당 페이지 내 제목·저자·목차·페이지정보가 잘못된 경우 알려주세요!
초록·키워드
Background: This study aimed to investigate out the influence of drought stress on the physiological responses of Dendropanax morbifera seedlings.
Methods and Results: Drought stress was induced by discontinuing water supply for 30 days. Under drought stress, photosynthetic activity was significantly reduced with decreasing soil water content (SWC), as revealed by the parameters such as Fv/Fm, maximum photosynthetic rate (P<SUB>N max</SUB>), stomatal conductance (g<SUB>s</SUB>), stomatal transpiration rate (E), andintercellular CO₂ concentration (Ci). However, water use efficiency (WUE) was increased by 2.5 times because of the decrease in g<SUB>s</SUB> to reduce transpiration. Particularly, E and g<SUB>s</SUB> were remarkably decreased when water was withheld for 21 days at 6.2% of SWC. Dendropanax morbifera leaves showed osmotic adjustment of −0.30㎫ at full turgor and −0.13 ㎫ at zero turgor. In contrast, the maximum bulk modulus of elasticity (E<SUB>max</SUB>) did not change significantly. Thus, Dendropanax morbifera seedlings could tolerate drought stress via osmotic adjustment.
Conclusions: Drought avoidance mechanisms of D. morbifera involve reduction in water loss from plants, through the control of stomatal transpiration, and reduction in cellular osmotic potential. Notably photosynthetic activity was remarkably reduced, to approximately 6% of the SWC.
Methods and Results: Drought stress was induced by discontinuing water supply for 30 days. Under drought stress, photosynthetic activity was significantly reduced with decreasing soil water content (SWC), as revealed by the parameters such as Fv/Fm, maximum photosynthetic rate (P<SUB>N max</SUB>), stomatal conductance (g<SUB>s</SUB>), stomatal transpiration rate (E), andintercellular CO₂ concentration (Ci). However, water use efficiency (WUE) was increased by 2.5 times because of the decrease in g<SUB>s</SUB> to reduce transpiration. Particularly, E and g<SUB>s</SUB> were remarkably decreased when water was withheld for 21 days at 6.2% of SWC. Dendropanax morbifera leaves showed osmotic adjustment of −0.30㎫ at full turgor and −0.13 ㎫ at zero turgor. In contrast, the maximum bulk modulus of elasticity (E<SUB>max</SUB>) did not change significantly. Thus, Dendropanax morbifera seedlings could tolerate drought stress via osmotic adjustment.
Conclusions: Drought avoidance mechanisms of D. morbifera involve reduction in water loss from plants, through the control of stomatal transpiration, and reduction in cellular osmotic potential. Notably photosynthetic activity was remarkably reduced, to approximately 6% of the SWC.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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