接种地孢球孢菌提高西葫芦耐盐性。F.幼苗

IF 0.3
O. Okon, G.D.O. Eneh, G. D. Uboh, P. P. Uyon
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引用次数: 1

摘要

叶菜西洋藤是一种生长在西非的热带藤蔓植物;它原产于尼日利亚南部,通常在尼日利亚南部以及世界各地遭受极端盐胁迫,导致西方滴虫产量的重大损失。因此,本研究旨在评价接种丛枝菌根真菌(Glomus geosporum)后,在盐渍土中接种西部柽柳幼苗的反应,并进一步确定西部柽柳耐盐的阈值。盐渍土处理显著降低了总光合色素含量(p=0.05)和丛枝菌根真菌定殖率(53.97% ~ 22.41%)。盐渍土处理菌根依赖性显著高于对照(100.00% ~ 15.13%)(p=0.05)。结果表明,西花苜蓿叶片对Na+的吸收和积累增加(对照500.00 mg/kg,盐碱地处理2920.13 mg/kg)。盐渍土处理显著(p=0.05)降低了K、Mg、N、p和Ca的含量,AM真菌显著(p=0.05)提高了光合色素和矿物质的含量。在不同的作用机制下,由于未接种的植株,与地孢菌结合的西花苜蓿表现出更好的耐盐性。土孢菌能够施加一些生理和根系形态的变化,如菌根-植物根系的广泛网络,以提高水和矿质养分的吸收。从生理上说,接种土孢子菌可以增强西部柽柳的活力,调节K+/Na+的速率,恢复植株内的营养和水分平衡,直接导致西部柽柳幼苗的耐盐性增强,从而提高生长和产量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancement of Salt Tolerance via Glomus geosporum Inoculation in Telfairia occidentalis Hook. F. Seedlings
The leafy vegetable Telfairia occidentalis is a tropical vine grown in West Africa; it is indigenous to Southern Nigeria and is usually subjected to extreme salt stress in Southern Nigeria as well as in the world that results in significant loss of T. occidentalis production. Therefore, the present investigation was aimed at evaluating the response of T. occidentalis seedlings inoculated with arbuscular mycorrhizal fungi (Glomus geosporum) in saline soil and further to determine the threshold of T. occidentalis salinity tolerance in association with G. geosporum. The total photosynthetic pigments contents in saline soil treatment were significantly (p=0.05) reduced as well as percentage arbuscular mycorrhizal fungi colonization (53.97 to 22.41%). Mycorrhizal dependency was significantly (p=0.05) higher in saline soil treatments compared to control (100.00% to 15.13%). Mineral analysis of T. occidentalis leaves revealed increased uptake and accumulation of Na+ (500.00 mg/kg in control to 2920.13 mg/kg in saline soil treatment). Saline soil treatments significantly (p=0.05) reduced the K, Mg, N, P and Ca. AM Fungi significantly (p=0.05) increased the photosynthetic pigments and minerals both in saline and non-saline soil treatments. Using different mechanisms T. occidentalis by association with G. geosporum showed better salt tolerance thank the uninoculated plants. G. geosporum was able to impose some physiological and root morphological changes such as an extensive network of the mycorrhizal-plant roots to improve water and mineral nutrient uptake. Physiologically G. geosporum inoculation enriched T. occidentalis vigour, attuned the rate of K+/Na+ which restored nutrient and water balance in the plant and directly resulting in the enhancement of salt tolerance in T. occidentalis seedlings, thus improving growth and yield.
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来源期刊
International Letters of Natural Sciences
International Letters of Natural Sciences MULTIDISCIPLINARY SCIENCES-
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