UV-C照射采后番茄果皮细胞超微结构变化与抗病性研究

doi:10.7668/hbnxb.2008.03.040

华北农学报 ›› 2008, Vol. 23 ›› Issue (3): 166-169. doi: 10.7668/hbnxb.2008.03.040

所属专题： 番茄；蔬菜专题；

UV-C照射采后番茄果皮细胞超微结构变化与抗病性研究

荣瑞芬¹, 冯双庆², 赵玉梅²

1. 北京联合大学, 师范学院, 北京, 100011;
2. 中国农业大学, 食品科学与营养工程学院, 北京, 100083

收稿日期:2007-12-18 出版日期:2008-06-28
作者简介:荣瑞芬(1964-),女,山西榆次人,副教授,工学博士,主要从事食品科学的教学与研究工作.

Studies on Change of Peel Cell Ultrastructure and Disease Resistance in Harvested Tomato Fruit by UV-C Irradiation

RONG Rui-fen¹, FENG Shuang-qing², ZHAO Yu-mei²

1. Teacher′s College of Beijing Union University, Beijing 100011, China;
2. Food College of China Agricultural University, Beijing 100083, China

Received:2007-12-18 Published:2008-06-28

摘要/Abstract

摘要： 为揭示UV-C诱导采后果蔬抗病性机制的细胞结构基础,对比观察经2.4 kJ/m2UV-C照射后存于24℃下第4天和第8天的绿熟番茄佳粉15果皮细胞超微结构变化及人工接种链格孢菌的抗病性。结果表明,UV-C处理可使果皮细胞中叶绿体等细胞器衰老延缓,细胞壁和细胞质变得致密和粘稠,电子透明度减小,中胶层分解推迟;人工接种后第3天,处理果发病率较对照降低31.67百分点,第10天降低15.27百分点,病情指数降低16.90。2.4 kJ/m2UV-C照射可提高番茄果实抗病性,增强果皮细胞壁防御能力。

关键词: 短波紫外线, 番茄, 细胞超微结构, 诱导抗病性

Abstract: In order to reveal the effect of UDC irradiation on the base of cell structure among mechanism of inducingdisease resistance in postharvest fruits and vegetables, the change of peel cell ultrastructure and infection inoculation ofAlternaraa in harvested green tomato fruits JIAFEN 15 irradiated lry 2. 4 kJ/ m² UV-C were studied when storied at 24℃at the 4th and 8th day. The results showed that disintegration and senescence of the cell organelle such as chloroplast intreated tomato peel cell were delayed as compared to the control. The cell wall and cell matrix of the fruit treated with UV-C showed to be thick and had high electron-opaque. Infection inoculation of irradiated fruits by UV-C was reduced 31. 67percentage point significantly compared to the control after inoculation 3 d and was reduced 15. 27 percentage point after10 d, the disease index was reduced 16. 90 at the 10th. Disease resistance and defence of、ell wall of 2. 4 kJ/m² UV-Ctreated fruits were enhanced.

Key words: UV-C, Tomato, Cell ultrastructure, Inducing disease resistance

中图分类号:

S61.2

荣瑞芬, 冯双庆, 赵玉梅. UV-C照射采后番茄果皮细胞超微结构变化与抗病性研究[J]. 华北农学报, 2008, 23(3): 166-169. doi: 10.7668/hbnxb.2008.03.040.

RONG Rui-fen, FENG Shuang-qing, ZHAO Yu-mei. Studies on Change of Peel Cell Ultrastructure and Disease Resistance in Harvested Tomato Fruit by UV-C Irradiation[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(3): 166-169. doi: 10.7668/hbnxb.2008.03.040.

http://www.hbnxb.net/CN/Y2008/V23/I3/166

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