Effect of Methyl Jasmonate on Phytoalexins Biosynthesis and Induced Disease Resistance to Fusarium oxysporum f. sp. Vasinfectum in Cotton (Gossypium hirsutum L.)

Table 2

Phenolic composition of cotton leaves treated with methyl jasmonate at 72 h posttreatment.

Chemical group	Compounds	Phenolic content of leaves (µg/g FDE)
		No-MeJA-treated plants (control)	Plants treated with MeJA (5.0 mM)
Stilbenoids	Pterostilbene (10)	nd	02.21 ± 0.01^a
	trans-Resveratrol (9)	01.84 ± 0.01^d	nd
	Piceatannol (8)	02.14 ± 0.01^e	08.31 ± 0.17^h
Hydroxycinnamic acids	Cichoric acid (11)	nd	03.45 ± 0.02^f
	Ferulic acid (5)	0.16 ± 0.002^c	11.08 ± 1.09^d
	Caffeoyl-D-glucose (2)	03.21 ± 0.02^f	03.51 ± 0.02^f
Chlorogenic acids	Chlorogenic acid (7)	nd	02.58 ± 0.01^a
	3-p-Coumaroylquinic acid (4)	07.39 ± 0.06^h	55.42 ± 1.33^j
Flavonoids	Catechin (3)	03.31 ± 0.02^f	03.65 ± 0.02^f
	Gossypetin (6)	04.06 ± 0.03^g	33.25 ± 1.31^i
Terpenoids	Gossypol (1)	0.092 ± 0.001^a	05.91 ± 0.12^b

FDE: freeze-dried extract; nd: nondetected; data are expressed as mean of three replicates; ±SD: standard deviation; within row and column means, numbers followed by a different letter are significantly different according to Duncan’s multiple range test at P = 0.05 level; MeJA: methyl jasmonate was used at 5.0 mM.