Volume
123
Year
2009
Page
272–279
Source
Scientia Horticulturae
Format Published
pdf
Descriptors
Carbonic anhydrase , Pistacia vera L. , Photosynthetic rate , Salinity stress , Water relations , Zinc
Abstract
A greenhouse study was conducted to evaluate the ameliorative effects of zinc (0, 5, 10 and
20 mg Zn kg1 soil) under saline (800, 1600, 2400 and 3200 mg NaCl kg1 soil) conditions on pistachio
(Pistacia vera L. cv. Badami) seedlings’ photosynthetic parameters, carbonic anhydrase activity, protein
and chlorophyll contents, and water relations. Zn deficiency resulted in a reduction of net photosynthetic
rate and stomatal conductance. The quantum yield of photosystemII was reduced at zinc deficiency and
salt stress. Zinc improved plant growth under salt-affected soil conditions. Increasing salinity in soil
under Zn-deficient conditions, generally decreased carbonic anhydrase activity, protein, chlorophyll a
and b contents. However, these adverse effects of salinity alleviated by increasing Zn levels up to
10 mg kg1 soil. Under increasing salinity, chlorophyll a/b ratio significantly increased. Zinc treatment
influenced the relationship between relative water content and stomatal conductance, and between leaf
water potential and stomatal conductance. It concluded that Zn may act as a scavenger of ROS for
mitigating the injury on biomembranes under salt stress. Adequate Zn also prevents uptake and
accumulation of Na in shoot, by increasing membrane integrity of root cells.
Call. No.
EA 30
IndexDate
1397/10/03
Indexer
Dashagha
Title of Article
Zinc influence and salt stress on photosynthesis, water relations, and carbonic anhydrase activity in pistachio
RecordNumber
31
Author/Authors