Details

Autor(en) / Beteiligte

• Zheng, Yang
• Sheng, Jiping
• Zhao, Ruirui
• Zhang, Jian
• Lv, Shengnan
• Liu, Lingyi
• Shen, Lin

Titel

Preharvest l-Arginine Treatment Induced Postharvest Disease Resistance to Botrysis cinerea in Tomato Fruits

Ist Teil von

• Journal of agricultural and food chemistry, 2011-06, Vol.59 (12), p.6543-6549

Ort / Verlag

Washington, DC: American Chemical Society

Erscheinungsjahr

2011

Quelle

MEDLINE

Beschreibungen/Notizen

• l-Arginine is the precursor of nitric oxide (NO). In order to examine the influence of l-arginine on tomato fruit resistance, preharvest green mature tomato fruits (Solanum lycopersicum cv. No. 4 Zhongshu) were treated with 0.5, 1, and 5 mM l-arginine. The reduced lesion size (in diameter) on fruit caused by Botrytis cinerea, as well as activities of phenylalanine ammonia-lyase (PAL), Chitinase (CHI), β-1,3-glucanase (GLU), and polyphenoloxidase (PPO), was compared between l-arginine treated fruits and untreated fruits. We found that induced resistance increased and reached the highest level at 3–6 days after treatment. Endogenous NO concentrations were positively correlated with PAL, PPO, CHI, and GLU activities after treatment with Pearson coefficients of 0.71, 0.94, 0.97, and 0.87, respectively. These results indicate that arginine induces disease resistance via its effects on NO biosynthesis and defensive enzyme activity.