Photosynthesis and activity of photosystem II in response to drought stress in Amur Grape (Vitis amurensis Rupr.)

Title:

Photosynthesis and activity of photosystem II in response to drought stress in Amur Grape (Vitis amurensis Rupr.)

Creator:

Wang, Z. X., Chen, L., Ai, J., Qin , H. Y., Liu, Y. X., Xu, P. L., Jiao, Z. Q., Zhao, Y., and Zhang, Q. T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6a93c99a-7c0d-4830-bfc9-d764dbcbf5ab
uuid:6a93c99a-7c0d-4830-bfc9-d764dbcbf5ab
issn:0300-3604
doi:10.1007/s11099-012-0023-9

Subject:

botanika, botany, Amur Grape, drought stress, JIP-test, net photosynthetic rate, photosystem II, 2, and 58

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The Amur Grape (Vitis amurensis Rupr.) cultivars ’shuangFeng’ and ‘ZuoShanyi’ were grown in shelter greenhouse under natural sunlight and subjected to drought. Sap flow rate, net photosynthetic rate (PN), and chlorophyll (Chl) fluorescence were measured on Amur Grape leaves subjected to different drought treatments. Significant decreases in P N were associated with increasing intercellular CO2 concentration (Ci), suggesting that the reduction in PN was caused by nonstomatal limitation. Analysis of OJIP transients according to the JIP-test protocol revealed that specific (per PSII reaction center) energy fluxes for light absorption, excitation energy trapping and electron transport have significantly changed. The appearance of a pronounced K-step and J-step in polyphasic rise of fluorescence transient suggested the oxygen-evolving complex and electron transport were inhibited. Drought stress has relatively little effect on the parameter maximal quantum yield of PSII photochemistry (Fv/Fm), but the performance index (PIABS) is more sensitive in different drought treatment. There are cultivar differences in the response of PSII activity to drought, the photosynthetic apparatus of ‘ZuoShanyi’ cultivar is more resistant to drought than that of ‘ShuangFeng’, and JIP-test could be a useful indicator for evaluation and selection to drought tolerance., Z. X. Wang ... [et al.]., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

189-196

Source:

Photosynthetica | 2012 Volume:50 | Number:2

Harvested from:

CDK

Metadata only:

false