지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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This study was performed to investigate the physiological responses of Oplopanax elatus by water condition. Drought stress was induced by withholding water for 26 days. The results show that PN max, SPAD, gs, E and Ci were significantly decreased with decreasing of soil moisture contents. However, AQY and WUE were decreased slightly only at 26 day. This implies that photosynthetic rate is reduced due to an inability to regulate water and CO₂ exchange through the stomatal. According to JIP analysis, Φ<sub>PO</sub>, Ψ<sub>O</sub>, Φ<sub>EO</sub> and PIABS were dramatically decreased at 21 day and 26 day, which reflects the relative reduction state of the photosystem II. On the other hand, the relative activities per reaction center such as ABS/RC, TRo/RC were significantly increased at 26 day. Particularly, Dio/RC and DIo/CS increased substantially under drought stress, indicating that excessive energy was consumed by heat dissipation. These results of chlorophyll a fluores-cence show that the sensitivity changes photosystem II activity. Thus, according to the results, O. elatus was exhibited a strong reduction of photosynthetic activity to approximately 10% soil moisture contents, and JIP parameters could be useful indicator to monitor the physiological states of O. elatus under drought stress.
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참고문헌 (32)
참고문헌 신청
Abril M / 1998 / Ecophysiological responses of three evergreen woody mediterranean species to water stress / Acta Oecologica 19:377~387
Boureima S / 2012 / Screening for drought tolerance in mutant germplasm of sesame(Sesamum indicum)probing by chlorophyll a fluorescence / Environmental and Experimental Botany 81:37~43
Evans JR. / 1987 / The dependence of quantum yield on wavelength and growth irradiance / Australian Journal of Plant Physiology 14:69~79
Falqueto AR / 2010 / Chlorophyll fluorescence in rice : probing of senescence driven changes of PSII activity on rice varieties differing in grain yield capacity / Brazilian Journal of Plant Physiology 22:35~41
Flexas J / 2004 / Diffusive and metabolic limitations to photosynthesis under drought and salinity in C3 plants / Plant Biology 6:269~279
Boureima S / 2012 / Screening for drought tolerance in mutant germplasm of sesame(Sesamum indicum)probing by chlorophyll a fluorescence / Environmental and Experimental Botany 81:37~43
Evans JR. / 1987 / The dependence of quantum yield on wavelength and growth irradiance / Australian Journal of Plant Physiology 14:69~79
Falqueto AR / 2010 / Chlorophyll fluorescence in rice : probing of senescence driven changes of PSII activity on rice varieties differing in grain yield capacity / Brazilian Journal of Plant Physiology 22:35~41
Flexas J / 2004 / Diffusive and metabolic limitations to photosynthesis under drought and salinity in C3 plants / Plant Biology 6:269~279
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UCI(KEPA) : I410-ECN-0101-2019-480-000587825