Effects of Trichoderma harzianum T83 on Suaeda salsa L. in coastal saline soil
Effects of Trichoderma harzianum T83 on Suaeda salsa L. in coastal saline soil
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哈茨木霉T83对滨海盐渍碱蓬的影响
DOI：
10.1016/j.ecoleng.2016.01.007
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发表时间：
2016-06-01
影响因子：
3.8
通讯作者：
Chang Ting-Ting
中科院分区：
文献类型：
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作者：
Chen Li-Hua;Zheng Jin-Hai;Chang Ting-Ting
可持续的生物技术可以将沿海盐碱地转变为农业上可行的土壤。在本研究中，分离到一株哈茨木霉T83菌株，该菌株对盐生植物碱蓬有促进生长的作用。测定了T83分生孢子粉和化肥对盐碱蓬生理及土壤物理、生物学性质的影响。与对照相比，接种孢子粉和化肥的盐碱蓬植株鲜重分别增加50.5%和82.7%，干重分别增加67.3%和119.3%(P<；0.05)。分生孢子粉和化肥处理提高了甜菜体内的Pro、有机酸、氨基酸、可溶性糖、K+和Ca~(2+)浓度(P<；0.05)，而化肥处理则分别提高了77.5%、58.3%、86.9%、58.7%、79.3%和38.8%。粉剂和化肥处理均能显著提高根系活力(P<；0.05)和过氧化物酶活性(P<；0.05)，降低丙二醛浓度(P<；0.05)。此外，化肥处理还提高了酚氧化酶和过氧化氢酶的活性。分生孢子粉和化肥处理显著降低了土壤容重和土壤盐分浓度，增加了土壤总孔隙度和田间持水量(P<；0.05)。粉肥(P<；0.05)显著增加了细菌总数、放线菌总数、真菌总数、氨化细菌(AB)、硝化细菌(NB)、解磷菌(PHB)和解钾菌(PTB)的数量。与对照相比，化肥处理的细菌总数、放线菌总数、真菌总数、AB、Nb、PHB和PTB分别增加9.2、55.9、6.0、21.1、4.0、9.2和5.2倍。T83肥能有效促进盐碱蓬在盐碱地上的生长，改善滨海盐碱地土壤质量。(C)2016爱思唯尔B.V.保留所有权利。
Sustainable biotechnological techniques can transform coastal saline soil into agriculturally viable soil. In the current study, the T83 strain of Trichoderma harzianum was isolated and shown to promote growth of Suaeda salsa L., a halophytic species. We assayed the effects of T83 conidia powder and fertilizer on the physiology of S. salsa as well as the physical and biological properties of the treated soil. Compared to the control plants, the experimental S. salsa plants that received conidia powder and fertilizer exhibited increased fresh masses by 50.5% and 82.7% and increased dry masses by 67.3% and 119.3%, respectively (P < 0.05). The concentrations of proline, organic acids, amino acids, soluble sugars, K+, and Ca2+ were increased in conidia powder and fertilizer treatments (P < 0.05), and increased by 77.5%, 58.3%, 86.9%, 58.7%, 79.3% and 38.8% in fertilizer treatment, respectively. Both powder and fertilizer treatments significantly increased the enzyme activity of peroxidase and superoxide dismutase as well as root vigor (P < 0.05) and decreased malondialdehyde concentration (P < 0.05). Additionally, fertilizer treatments increased enzyme activity of phenol oxidase and catalase. Conidia powder and fertilizer treatments significantly decreased soil bulk density and soil salt concentration, while increasing soil total porosity and field water capacity (P < 0.05). Powder and fertilizer significantly (P < 0.05) increased the populations of total bacteria, total actinomyces, total fungi, ammonifying bacteria (AB), nitrifying bacteria (NB), phosphate-solubilizing bacteria (PHB), and potassium-solubilizing bacteria (PTB). Compared to the control, the fertilizer treatment exhibited populations of total bacteria, total actinomyces, total fungi, AB, NB, PHB, and PTB that had increased by factors of 9.2, 55.9, 6.0, 21.1, 4.0, 9.2 and 5.2, respectively. The T83 fertilizer effectively promoted the growth of S. salsa in saline soil and improved the coastal saline soil quality. (C) 2016 Elsevier B.V. All rights reserved.