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The effects of salicylic acid on pigment contents in ultraviolet radiation stressed pepper plants

2008; Institute of Experimental Botany of the Czech Academy of Sciences; Volume: 52; Issue: 1 Linguagem: Inglês

10.1007/s10535-008-0037-0

1573-8264

Kobra Mahdavian, Khosrow Manouchehri Kalantari, M Ghorbanli, M. Torkzade,

Plant and animal studies

Pepper (Capsicum annuum L.) plants were sprayed with salicylic acid (SA) and treated with ultraviolet radiation UV-A (320-390 nm), UV-B (312 nm), and UV-C (254 nm) of 6.1, 5.8, and 5.7 W m-2, respectively. UV significantly reduced contents of chlorophyll (Chl) a and b, and carotenoids (Car). SA treatment moderated Chl and Car reduction in plants treated with UV-B and UV-C. The quantity of antocyanins, flavonoids, rutin, and UV-absorbing compounds in plants that were treated with UV-B, UV-C, and SA were significantly increased. Foliar spray of SA counteracted the UV effects on pepper.