新疆农业科学 ›› 2023, Vol. 60 ›› Issue (7): 1780-1789.DOI: 10.6048/j.issn.1001-4330.2023.07.026

• 微生物·畜牧兽医 • 上一篇    下一篇

甜瓜抗链格孢侵染病程相关蛋白及苯丙烷代谢酶的变化

刘阳1,2(), 白羽嘉1,2(), 张郑啸1,2, 楚晨俐1, 王甜甜1, 冯作山1,2()   

  1. 1.新疆农业大学食品科学与药学学院,乌鲁木齐 830052
    2.新疆果品采后科学技术重点实验室,乌鲁木齐 830052
  • 收稿日期:2022-01-20 出版日期:2023-07-20 发布日期:2023-07-11
  • 通信作者: 冯作山(1963-),男,新疆人,教授,博士,硕士生/博士生导师,研究方向为农产品加工与综合利用,(E-mail)fengzuoshan@126.com
    白羽嘉(1984-),男,新疆人,副教授,博士,硕士生导师,研究方向为农产品加工与综合利用、作物遗传育种、果品采后生物学与物流保鲜,(E-mail)saintbyj@126.com
  • 作者简介:刘阳(1998-),女,新疆人,硕士研究生,研究方向为农产品加工与综合利用,(E-mail)ly98128@163.com
  • 基金资助:
    国家自然科学基金项目(31960489)

Changes of related proteins and phenylpropane metabolic enzymes in melon infected by Alternaria alternata

LIU Yang1,2(), BAI Yujia1,2(), ZHANG Zhengxiao1,2, CHU Chenli1, WANG Tiantian1, FENG Zuoshan1,2()   

  1. 1. College of Food Sciences and Pharmacy, Xinjiang Agricultural University, Urumqi 830052, China
    2. Xinjiang Key Laboratory for Postharvest Science and Technology of Fruits, Urumqi 830052, China
  • Received:2022-01-20 Online:2023-07-20 Published:2023-07-11
  • Correspondence author: FENG Zuoshan (1963-), male, professor, research field:processing and comprehensive utilization of agricultural products,(E-mail)fengzuoshan@126.com
    BAI Yujia (1984-), male, professor, research field:processing and comprehensive utilization of agricultural products,crop genetics and breeding,postharvest biology and logistics preservation of fruits,(E-mail)saintbyj@126.com
  • Supported by:
    National Natural Science Foundation of China "Genome Sequencing of Alternaria. alternata and Pathogenic Mechanism of Postharvest Melon Fruit Infection"(31960489)

摘要:

【目的】分析常温贮藏期间(25℃)不同甜瓜果皮与果肉组织病程相关蛋白和苯丙烷代谢相关酶的差异,探究甜瓜在常温贮藏下的内源抗病性。【方法】甜瓜果实损伤接种链格孢,贮藏期间分离甜瓜果实外果皮、内果皮和果肉组织,测定不同贮藏天数时甜瓜不同组织的病程相关蛋白和苯丙烷代谢相关酶,分析其不同组织抗病能力的差异性,分析不同贮藏温度对甜瓜抗病性的影响。【结果】贮藏期间伽师瓜的病斑直径小于86-1甜瓜,染菌后16 d,86-1甜瓜的果皮和果肉病斑分别是伽师瓜的1.55倍和1.38倍;在此期间甜瓜内几丁质酶(Chitinase,CHT)、β-1,3-葡聚糖酶(β-1,3-Glucan,GLU)、甜瓜4-香豆酰辅酶A连接酶(Coumaroyl-CoA,4CL)、苯丙氨酸解氨酶(L-Phenylalanin Ammo-Nialyase,PAL)、肉桂酸-4-羟化酶(Cinnamic Acid 4-Hydroxylase,C4H)活性呈先升高后下降趋势,伽师瓜酶活性高于86-1甜瓜,两种甜瓜的酶活性均为外果皮>内果皮>果肉组织,伽师瓜比86-1甜瓜更快到达酶活性高峰。【结论】损伤接种链格孢温度对甜瓜果实病程相关蛋白和苯丙烷代谢酶的变化趋势无明显影响,酶活性均呈现先升高后下降的趋势;伽师瓜优于86-1甜瓜,果皮抗病能力强于果肉,伽师瓜比86-1甜瓜更积极抵御链格孢的侵染。

关键词: 链格孢菌; 甜瓜; 病程相关蛋白; 苯丙烷代谢

Abstract:

【Objective】 To analyze the differences of related proteins and enzymes involved in phenylpropanoid metabolism in pathogenesis from diverse melons’ peel and pulp tissues, which are stored in room temperature (25℃) and explore the endogenous disease resistance of melons stored at room temperature.【Methods】 Melon was were inoculated with Alternaria alternata, and their epricarp, endocarp and pulp tissues were separated during the storage. The pathogenesis related proteins and enzymes involved in phenylpropanoid metabolism in different tissues of muskmelons were measured in different storage days,and the disease resistance of different tissues of melon were analyzed. The indicators in these issues were measured every other day to deduce their the disease resistance. Compared with previous researches, the effects of different storage temperatures on disease resistance of muskmelon were figured out as well.【Results】 During storage, the lesion diameter of Jiashigua was smaller than 86-1 melon’s, the lesion size in the peel and pulp of 86-1 melons reached 1.55 and 1.375 times bigger than Jiashigua’s on the 16th day. Activities of Chitinase (CHT) and β-1,3-glucanase (GLU) in melon showed a trend of increasing first and then decreasing, and the enzyme activity of Jiashigua was higher than 86-1 melon’s, exocarp was higher than endocarp and pulp tissue. Compared to 86-1 melon, Jiashigua reached the peak of enzyme activity in a shorter time.【Conclusion】 It is found that temperature has no obvious effect on the change trend of the pathogenesis related proteins and enzymes involved in phenylpropanoid metabolism in melons, and enzyme activities all show a trend of increasing at first and then decreasing; In terms of disease resistance, Jiashigua is superior to 86-1 melon. In dealing with the infection of Alternaria alternata, peels have stronger disease resistance than pulps do, so Jiashigua is more active to resist than 86-1 melon facing the infection of Alternaria alternata.

Key words: Alternaria alternata; muskmelon; pathogenesis related proteins; phenylpropanoid metabolism


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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