Identification of drought-response genes and a study of their expression during sucrose accumulation and water deficit in sugarcane culms

Table 5 Free amino acid content in internodes 4 and 5 (I4-5) and the lowest internode (LI) taken from sugarcane cultivar Q117 15 days after imposition of water deficit.

	Amino acid concentration (nmoles g^-1dry weight)
	I 4-5		LI
Amino acid	Control	water deficit	Control	water deficit
His	18.63 ± 4.00¹	179.12 ± 7.73*	6.32 ± 0.53	108.26 ± 1.52*
Arg	34.18 ± 2.03	117.52 ± 7.73*	12.06 ± 0.29	71.14 ± 5.32*
Asn	214.28 ± 14.18	4084.42 ± 317.28*	85.16 ± 2.57	2599.75 ± 143.49*
Ser	154.89 ± 25.48	758.93 ± 165.10*	46.95 ± 2.20	407.78 ± 9.71*
Gln	291.81 ± 26.48	253.39 ± 60.56	118.06 ± 8.06	364.07 ± 22.32*
Gly	89.41 ± 14.27	69.75 ± 7.58*	49.54 ± 2.26	68.56 ± 1.41*
Asp	227.72 ± 13.33	68.49 ± 14.06*	114.62 ± 4.96	111.15 ± 7.01
Glu	326.76 ± 9.10	63.29 ± 11.60*	161.97 ± 5.12	95.46 ± 2.43*
Thr	69.50 ± 6.14	323.55 ± 51.77*	23.70 ± 0.96	204.38. ± 6.96*
Ala	264.77 ± 20.88	415.80 ± 100.92*	112.68 ± 6.31	561.32 ± 4.56*
Pro	39.44 ± 4.62	233.27 ± 64.31*	12.46 ± 0.02	215.98 ± 8.75*
Tyr	78.86 ± 8.43	650.95 ± 23.51*	21.85 ± 0.16	105.72 ± 4.30*
Val	52.16 ± 4.45	235.96 ± 39.93*	18.18 ± 0.78	221.36 ± 2.00*
Met	10.21 ± 0.80	101.52 ± 21.45*	4.43 ± 1.13	72.30 ± 4.68*
Lys	36.44 ± 2.57	9.72 ± 3.26	12.08 ± 0.77	24.76 ± 1.05*
Ile	35.06 ± 3.57	220.21 ± 30.65*	12.33 ± 1.08	211.29 ± 3.35*
Leu	32.87 ± 3.81	191.23 ± 30.89*	9.90 ± 0.55	185.54 ± 3.17*
Phe	16.13 ± 2.23	484.31 ± 32.59*	5.64 ± 0.07	150.73 ± 7.99*

¹Data are presented as mean values ± standard error of the mean (n = 3) * indicate significantly different concentration of stressed plants compared to control (Student t-test P ≤ 0.05).

ISSN: 1471-2229