Nitric Oxide Mitigates the Deleterious Effects Caused by Infection of Pseudomonas syringae pv. syringae and Modulates the Carbon Assimilation Process in Sweet Cherry under Water Stress

被引:0
|
作者
Rubilar-Hernandez, Carlos [1 ]
Alvarez-Maldini, Carolina [2 ,3 ]
Pizarro, Lorena [1 ,4 ]
Figueroa, Franco [1 ]
Villalobos-Gonzalez, Luis [5 ]
Pimentel, Paula [5 ]
Fiore, Nicola [6 ]
Pinto, Manuel [2 ]
机构
[1] Univ OHiggins, Lab Inmun Vegetal, Inst Ciencias Agroalimentarias Anim & Ambientales, San Fernando 3070000, Chile
[2] Univ OHiggins, Inst Ciencias Agroalimentarias Anim & Ambientales, San Fernando 3070000, Chile
[3] Univ Concepcion, Fac Ciencias Forestales, Dept Silvicultura, Concepcion 4070374, Chile
[4] Univ OHiggins, Ctr UOH Biol Sistemas San Vegetal, San Fernando 3070000, Chile
[5] Ctr Estudios Avanzados Fruticultura CEAF, Rengo 2940000, Chile
[6] Univ Chile, Fac Ciencias Agron, Dept Sanidad Vegetal, Santiago 8820808, Chile
来源
PLANTS-BASEL | 2024年 / 13卷 / 10期
关键词
nitric oxide; Pseudomonas syringae; stress mitigation; stomatal conductance; net CO2 assimilation; DROUGHT STRESS; ABSCISIC-ACID; SODIUM-NITROPRUSSIDE; S-NITROSYLATION; BACTERIAL CANKER; RESISTANCE; DEFENSE; PHOTOSYNTHESIS; TOLERANCE; RESPONSES;
D O I
10.3390/plants13101361
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Bacterial canker is an important disease of sweet cherry plants mainly caused by Pseudomonas syringae pv. syringae (Pss). Water deficit profoundly impairs the yield of this crop. Nitric oxide (NO) is a molecule that plays an important role in the plant defense mechanisms. To evaluate the protection exerted by NO against Pss infection under normal or water-restricted conditions, sodium nitroprusside (SNP), a NO donor, was applied to sweet cherry plants cv. Lapins, before they were exposed to Pss infection under normal or water-restricted conditions throughout two seasons. Well-watered plants treated with exogenous NO presented a lower susceptibility to Pss. A lower susceptibility to Pss was also induced in plants by water stress and this effect was increased when water stress was accompanied by exogenous NO. The lower susceptibility to Pss induced either by exogenous NO or water stress was accompanied by a decrease in the internal bacterial population. In well-watered plants, exogenous NO increased the stomatal conductance and the net CO2 assimilation. In water-stressed plants, NO induced an increase in the leaf membranes stability and proline content, but not an increase in the CO2 assimilation or the stomatal conductance.
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页数:21
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