Changes in net photosynthetic rate and chlorophyll fluorescence in potato leaves induced by water stress

Title:

Changes in net photosynthetic rate and chlorophyll fluorescence in potato leaves induced by water stress

Creator:

Basu, P. S., Sharma, Ashoo, and Sukumaran, N. P.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:53266ec8-4a53-4fc2-8ea6-8f13570c1cad
uuid:53266ec8-4a53-4fc2-8ea6-8f13570c1cad
issn:0300-3604
doi:10.1023/A:1006801311105

Subject:

drought, electron transport, feedback inhibition, photochemical quenching, osmotic potential, quantum yield, Solanum ruberosum, and water potential

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Net rates of photosynthesis (PN) saturated by irradiance of >500 μmol m-2 s-1 (PAR) significantly decreased in water-stressed potato (Solanum tuberosum L. cv. Kufri Sindhuri) plants. The quantum yield of photochemical energy conversion (Fv/Fm), relative electron transport rate (ETR), and photochemical quenching (Qp) exhibited a parallel decline at high irradiance. A slight decrease in relative water content (RWC) was accompanied by a drastic decline in leaf water potential (Ψw) from -0.2 to -1.0 MPa. Dehydrated leaves showed an increase in the amount of total soluble sugars per unit leaf area which inhibited the photosynthesis in a feedback manner. After rewatering, PN and Fv/Fm were restored to the values of control plants within 24 h, and the restoration was accompanied by a proportionate lowering of content of total soluble sugars in the leaves. and P. S. Basu, Ashoo Sharma, N. P. Sukumaran.

Language:

Multiple languages

Rights:

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

Coverage:

13-19

Source:

Photosynthetica | 1998 Volume:35 | Number:1

Harvested from:

CDK

Metadata only:

false