biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 53:391-394, 2009 | DOI: 10.1007/s10535-009-0074-3

Photosynthetic and anatomic responses of peanut leaves to zinc stress

G. R. Shi1,2, Q. S. Cai1,*
1 College of Life Sciences, Nanjing Agricultural University, Nanjing, P.R. China
2 Department of Biology, Huaibei Coal Industry Teachers College, Huaibei, P.R. China

In this study, photosynthetic performance, pigment content, chlorophyll a fluorescence, and leaf anatomy in peanut (Arachis hypogaea) subjected to zinc (Zn) stress were investigated. Zn stress resulted in reduction of photosynthetic and transpiration rates, pigment contents and root biomass. Zn-induced xerophyte structure in peanut leaves (i.e. thick lamina, upper epidermis, and palisade mesophyll, as well as abundant and small stomata) also contributed to decreased transpiration rate and stomatal conductance. This in turn, partially contributed to the limitation of photosynthesis.

Keywords: Arachis hypogaea; chlorophyll a fluorescence; gas exchange; leaf anatomy
Subjects: Arachis hypogaea; carotenoids; chlorophyll a,b; chlorophyll fluorescence; CO2 concentration, internal; groundnut; growth and growth analysis; heavy metals; leaf epidermis; leaf parenchyma; peanut; photosynthetic rate; stomata number and size; stomatal conductance; transpiration rate; water use efficiency (WUE); zinc

Received: July 20, 2008; Accepted: January 19, 2009; Published: June 1, 2009  Show citation

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Shi, G.R., & Cai, Q.S. (2009). Photosynthetic and anatomic responses of peanut leaves to zinc stress. Biologia plantarum53(2), 391-394. doi: 10.1007/s10535-009-0074-3
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