金钗石斛促生长内生真菌DN592对番茄生长与果实营养品质的影响

刘元士 ,  何苏静 ,  王江娜 ,  李林 ,  余侃 ,  袁雷 ,  李俊 ,  起国海 ,  赵远卓 ,  徐德林

遵义医科大学学报 ›› 2026, Vol. 49 ›› Issue (7) : 702 -710.

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遵义医科大学学报 ›› 2026, Vol. 49 ›› Issue (7) : 702 -710.
基础研究

金钗石斛促生长内生真菌DN592对番茄生长与果实营养品质的影响

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Effects of the growth-promoting endophytic fungus DN592 from Dendrobium nobile on tomato growth and fruit nutritional quality

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摘要

目的 探讨中药材金钗石斛来源的内生真菌DN592对番茄生长及果实营养品质的影响,为药用植物内生真菌在农产品营养强化中的应用提供依据。方法 通过盆栽及田间试验,设置不同剂量DN592菌液处理,测定番茄株高、根鲜重等生长指标,以及果实甜度、番茄红素、维生素C等营养品质指标。结果 盆栽条件下,DN592处理均显著抑制番茄株高,同时根鲜重最大增幅达104.0%(P<0.05);果实甜度、番茄红素和维生素C含量最高分别提升50.2%(P<0.05)、54.2%(P<0.05)和88.7%(P<0.001),中剂量处理促根与提质效果更为均衡。田间试验中,低剂量DN592处理显著增加果实横径与纵径(P<0.05),营养品质指标呈上升趋势但未达显著水平。结论 金钗石斛内生真菌DN592兼具控旺促根与提升番茄营养品质的双重效应,初步证实了药源内生菌转化应用于蔬菜生产的潜力,可为绿色微生物菌剂开发提供新的菌种资源。

Abstract

Objective This study aimed to investigate the effects of the endophytic fungus DN592, isolated from the Chinese medicinal plant Dendrobium nobile, on tomato growth and fruit nutritional quality, and to provide a basis for the application of medicinal plant-derived endophytic fungi in the nutritional biofortification of agricultural products. Methods Pot and field experiments were conducted with different doses of a DN592 fungal suspension. Growth indicators including plant height and root fresh weight were measured. In addition, fruit nutritional quality indicators such as sugar content, lycopene, and vitamin C were determined. Results Under pot conditions, all DN592 treatments significantly inhibited tomato plant height, while root fresh weight increased by up to 104.0% (P<0.05). The maximum increases in fruit sugar content, lycopene, and vitamin C were 50.2% (P<0.05), 54.2% (P<0.05), and 88.7% (P<0.001), respectively. The medium-dose treatment exhibited a more balanced effect on both root promotion and quality improvement. In the field experiment, the low-dose DN592 treatment significantly increased the transverse and longitudinal diameters of tomato fruits (P<0.05). The nutritional quality indicators showed an upward trend but did not reach significant levels. Conclusion The endophytic fungus DN592 from Dendrobium nobile demonstrates dual effects of suppressing excessive shoot growth and promoting root development while enhancing tomato fruit nutritional quality. This finding preliminarily confirms the potential of applying medicinal plant-derived endophytic fungi to vegetable production and provides new strain resources for the development of green microbial agents.

关键词

金钗石斛 / 内生真菌DN592 / 番茄 / 生长调控 / 果实营养品质

Key words

Dendrobium nobile / endophytic fungus DN592 / tomato / growth regulation / fruit nutritional quality

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刘元士,何苏静,王江娜,李林,余侃,袁雷,李俊,起国海,赵远卓,徐德林. 金钗石斛促生长内生真菌DN592对番茄生长与果实营养品质的影响[J]. 遵义医科大学学报, 2026, 49(7): 702-710 DOI:

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基金资助

国家自然科学基金资助项目(31960074)

教育部供需对接就业育人项目(2025030310008)

教育部产学合作协同育人项目(230901414190927)

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