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In this study, the inducible function of sodium nitroprusside (SNP, a nitric oxide donor) was evaluated based on the changes in some biochemical characteristics of mungbean (Vigna radiata (L.) Wilczek cv. DX208) involving resistance to cowpea aphid (Aphis craccivora Koch). SNP treatment was sufficient to increase content of chlorophylls, reduced aphid-infested damage, accumulated biosynthesis of antioxidants such as phenolic compounds and flavonoids in mungbean plants attacked by A. craccivora. | Trường Đại học Vinh Tạp chí khoa học, Tập 47, Số 2A (2018), tr. 5-10 EFFECT OF SODIUM NITROPRUSSIDE ON THE BIOCHEMICAL RESISTANCE OF MUNGBEAN TO COWPEA APHID Mai Van Chung (1), Nguyen Dinh San (1), Le The Bien (2) 1 Trường Đại học Vinh 2 Trường Đại học Công nghệ Miền Đông Ngày nhận bài 30/6/2018, ngày nhận đăng 15/8/2018 Abstract: In this study, the inducible function of sodium nitroprusside (SNP, a nitric oxide donor) was evaluated based on the changes in some biochemical characteristics of mungbean (Vigna radiata (L.) Wilczek cv. DX208) involving resistance to cowpea aphid (Aphis craccivora Koch). SNP treatment was sufficient to increase content of chlorophylls, reduced aphid-infested damage, accumulated biosynthesis of antioxidants such as phenolic compounds and flavonoids in mungbean plants attacked by A. craccivora. Furthermore, SNP was also capable of either negatively altering the lifetime or diminishing fecundity of cowpea aphid. Those results demonstrated that SNP application improved the biochemical resistance of V. radiata cv. DX208 against its pest, A. craccivora. I. INTRODUCTION Nitric oxide (NO) donors, including sodium nitroprusside-SNP, are chemical inducers providing NO that has been known to trigger the specific defense responses in plants [1]. NO actually participates in several physiological processes and improves plants’ tolerance of stresses [3, 7]. As a signaling molecule, NO is involved in defense enzymes/proteins (i.e., nitric oxide synthase, NO-associated protein 1, SNitrosoglutathione reductase), the acquired systemic resistance in plants [4], plays an important role in rice tolerance of Nilaparvata lugens feeding [5], pea defense response to Acyrthosiphon pisum [10], and tobacco defense against Manduca sexta attack [11]. Mungbean (Vigna radiata (L.) R. Wilczek) is an important legume crop that consumed as dry seeds and as bean sprouts. It serves as a cash crop for farmers and is an excellent source of digestible protein of low .
