Leaf rolling and photosystem II efficiency in Ctenanthe setosa exposed to drought stress

被引:64
作者
Nar, H. [1 ]
Saglam, A. [1 ]
Terzi, R. [1 ]
Varkonyi, Z. [2 ]
Kadioglu, A. [1 ]
机构
[1] Karadeniz Tech Univ, Fac Art & Sci, Dept Biol, TR-61080 Trabzon, Turkey
[2] Hungarian Acad Sci, Biol Res Ctr, Inst Plant Biol, H-6701 Szeged, Hungary
基金
美国国家科学基金会;
关键词
chlorophyll fluorescence; Ctenanthe setosa; drought; leaf rolling; protection; PSII functionality; PHOTOSYNTHETIC ELECTRON-TRANSPORT; CHLOROPHYLL FLUORESCENCE; LEAVES; LIGHT; PHOTOINHIBITION; PHOTOPROTECTION; AVOIDANCE; EXCHANGE; WHEAT; CYCLE;
D O I
10.1007/s11099-009-0066-8
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Photochemical efficiency of PSII of Ctenanthe setosa was investigated to understand the photosynthetic adaptation mechanism under drought stress causing leaf rolling. Stomatal conductance (g (s)), the levels of photosynthetic pigments and chlorophyll (Chl) fluorescence parameters were determined in leaves that had four different visual leaf rolling scores from 1 to 4, opened after re-watering and mechanically opened at score 4. g (s) value gradually decreased in adaxial and abaxial surfaces in relation to scores of leaf rolling. Pigment contents decreased until score 3 but approached score 1 level at score 4. No significant variations in effective quantum yield of PSII (I broken vertical bar(PSII)), and photochemical quenching (q(p)) were found until score 3, while they significantly decreased at score 4. Non-photochemical quenching (NPQ) increased at score 2 but then decreased. After re-watering, the Chl fluorescence and other physiological parameters reached to approximately score 1 value, again. As for mechanically opened leaves, g (s) decreased during drought period. The decrease in adaxial surface was higher than that of the rolled leaves. NPQ was higher than that of the rolled leaves. I broken vertical bar(PSII) and q(p) significantly declined and the decreases were more than those of the rolled leaves. In conclusion, the results indicate that leaf rolling protects PSII functionality from damage induced by drought stress.
引用
收藏
页码:429 / 436
页数:8
相关论文
共 40 条
[1]   COPPER ENZYMES IN ISOLATED CHLOROPLASTS - POLYPHENOLOXIDASE IN BETA-VULGARIS [J].
ARNON, DI .
PLANT PHYSIOLOGY, 1949, 24 (01) :1-15
[2]   Simultaneous CO2- and O-16(2)/O-18(2)-gas exchange and fluorescence measurements indicate differences in light energy dissipation between the wild type and the phytochrome-deficient aurea mutant of tomato during water stress [J].
Biehler, K ;
Haupt, S ;
Beckmann, J ;
Fock, H ;
Becker, TW .
JOURNAL OF EXPERIMENTAL BOTANY, 1997, 48 (312) :1439-1449
[3]   ROLE OF THE XANTHOPHYLL CYCLE IN PHOTOPROTECTION ELUCIDATED BY MEASUREMENTS OF LIGHT-INDUCED ABSORBENCY CHANGES, FLUORESCENCE AND PHOTOSYNTHESIS IN LEAVES OF HEDERA-CANARIENSIS [J].
BILGER, W ;
BJORKMAN, O .
PHOTOSYNTHESIS RESEARCH, 1990, 25 (03) :173-185
[4]   Antioxidative protection in the inducible CAM plant Sedum album L following the imposition of severe water stress and recovery [J].
Castillo, FJ .
OECOLOGIA, 1996, 107 (04) :469-477
[5]  
CORLETT JE, 1994, PHYSIOL PLANTARUM, V92, P423, DOI 10.1111/j.1399-3054.1994.tb08831.x
[6]   Drought stress inhibits photosynthesis by decreasing stomatal aperture - not by affecting ATP synthesis [J].
Cornic, G .
TRENDS IN PLANT SCIENCE, 2000, 5 (05) :187-188
[7]  
CORNIC G, 1992, PHOTOSYNTHETICA, V27, P295
[8]  
Cornic G., 1996, Photosynthesis and the Environment, P347, DOI [10.1007/0-306-48135-914, DOI 10.1007/0-306-48135-9_14]
[9]   PHOTOPROTECTION AND OTHER RESPONSES OF PLANTS TO HIGH LIGHT STRESS [J].
DEMMIGADAMS, B ;
ADAMS, WW .
ANNUAL REVIEW OF PLANT PHYSIOLOGY AND PLANT MOLECULAR BIOLOGY, 1992, 43 :599-626
[10]  
Feild TS, 2001, PLANT PHYSIOL, V127, P566, DOI 10.1104/pp.010063