采前水杨酸处理对杏果实抗病性及苯丙烷代谢的诱导

doi:10.7506/spkx1002-6630-201502042

食品科学

采前水杨酸处理对杏果实抗病性及苯丙烷代谢的诱导

赵亚婷，朱璇*，马玄，郭杨美娟

新疆农业大学食品科学与药学学院，新疆乌鲁木齐 830052

出版日期:2015-01-25 发布日期:2015-01-16
通讯作者: 朱璇
基金资助:
国家自然科学基金地区科学基金项目（31260408）

Induction of Disease Resistance and Phenylpropanoid Metabolism in Apricot Fruits by Pre-Harvest Salicylic Acid Treatment

ZHAO Yating, ZHU Xuan*, MA Xuan, GUO Yangmeijuan

College of Food Science and Pharmacy, Xinjiang Agricultural University, Ürümqi 830052, China

Online:2015-01-25 Published:2015-01-16
Contact: ZHU Xuan

摘要/Abstract

摘要：

以新疆赛买提杏为试材，在果实坐果期、膨大期、转色期及采收前48 h的4 个时期，采用1.0 mmol/L水杨酸对杏果实进行喷施处理，以喷清水处理作为对照。采收后的杏果实置于4 ℃、90%～95%相对湿度条件下贮藏，定期统计杏果实接种链格孢（Alternaria alternata）的病斑直径和接种发病率，测定苯丙氨酸解氨酶（PAL）、肉桂酸羟化酶（C4H）、4-香豆酰-辅酶A连接酶（4-CL）的活性及木质素、总酚和类黄酮的含量，研究采前水杨酸处理对杏果实抗病性和苯丙烷代谢关键酶活性及代谢产物积累的影响。结果显示：采前水杨酸处理能有效降低杏果实损伤接种的病斑直径和接种发病率，显著提高杏果实PAL、C4H、4-CL的活性和木质素、总酚、类黄酮的含量。

关键词: 杏, 水杨酸, 苯丙烷代谢, 采后病害, 诱导抗性

Abstract:

Xinjiang apricot fruits (‘Saimaiti’ cultivar) were sprayed with 1.0 mmol/L salicylic acid at four growth periods:
setting, enlargement, color-turning and 48 h before picking. The post-harvest apricot fruits were stored at 4 ℃, 90%–95%
relative humidity (RH). The lesion diameter and the incidence of disease of apricot fruits inoculated with Alternaria
alternata, the activities of phenylalanine ammonia-lyase (PAL), CoA ligase (4-CL) and cinnamate-4hydroxylase (C4H)
and the contents of flavanoids, lignin and total phenolics in apricot fruits were measured regularly. The effect of salicylic acid on
phenylpropanoid metabolism in apricot fruits during storage period was studied. The results showed that the lesion diameter and
disease incidence of apricot fruits during storage were significantly inhibited by pre-harvest salicylic acid treatment. Besides, the
activities of PAL, C4H and 4-CL and the contents of flavonoids, lignin and total phenolics in apricot fruits were increased.

Key words: apricot fruits, salicylic acid, phenylpropanoid metabolism, postharvest diseases, induced resistance

中图分类号:

TS255.3

赵亚婷，朱璇*，马玄，郭杨美娟. 采前水杨酸处理对杏果实抗病性及苯丙烷代谢的诱导[J]. 食品科学, doi: 10.7506/spkx1002-6630-201502042.

ZHAO Yating, ZHU Xuan*, MA Xuan, GUO Yangmeijuan. Induction of Disease Resistance and Phenylpropanoid Metabolism in Apricot Fruits by Pre-Harvest Salicylic Acid Treatment[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201502042.

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采前水杨酸处理对杏果实抗病性及苯丙烷代谢的诱导

Induction of Disease Resistance and Phenylpropanoid Metabolism in Apricot Fruits by Pre-Harvest Salicylic Acid Treatment

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