亚磷酸盐对渗透胁迫下甘蔗生长和生化物质的影响。
Phosphite effects on sugarcane growth and biochemicals under osmotic stress.
作者信息
Martínez-Ballesteros Jennifer, Bañuelos-Hernández Karina P, Rodríguez-Lagunes Daniel A, Hidalgo-Contreras Juan V, Pastelín-Solano Miriam C, Vivar-Vera Guadalupe, Bulbarela-Marini Javier E, Castañeda-Castro Odon
机构信息
Faculty of Biological and Agricultural Sciences, University of Veracruz, Amatlán de los Reyes, Veracruz, Mexico.
College of Postgraduates in Agricultural Sciences campus Córdoba, Amatlán de los Reyes, Veracruz, Mexico.
出版信息
PeerJ. 2025 Aug 5;13:e19763. doi: 10.7717/peerj.19763. eCollection 2025.
BACKGROUND
Biostimulants positively impact plant growth, yield, and chemical composition while enhancing tolerance to biotic and abiotic stress. Phosphite (Phi), a phosphate analog, has been proposed as a biostimulant due to its advantages over traditional phosphate fertilizers and herbicides.
METHODS
This study evaluated the effects of Phi on sugarcane seedlings (CP 72-2086) under conventional (non-stress) and osmotic stress conditions during multiplication. Seedlings were treated with Phi at 0.1, 0.3, and 0.5 mM (derived from HPO) for 30 days, followed by 7 days of osmotic stress induced with 10% polyethylene glycol 6000 (PEG).
RESULTS
Phi significantly increased leaf length, width, and number, as well as shoot count. Additionally, it enhanced foliar concentrations of chlorophylls and , sugars, and amino acids under both conventional and osmotic stress conditions. In conclusion, Phi serves as an effective inorganic biostimulant for sugarcane (CP 72-2086) during multiplication, stimulating seedling growth and modulating essential biomolecule concentrations.
背景
生物刺激素对植物生长、产量和化学成分有积极影响，同时增强对生物和非生物胁迫的耐受性。亚磷酸盐（Phi）是一种磷酸盐类似物，因其相对于传统磷肥和除草剂的优势而被提议作为一种生物刺激素。
方法
本研究评估了Phi在常规（非胁迫）和渗透胁迫条件下对甘蔗幼苗（CP 72-2086）增殖的影响。用0.1、0.3和0.5 mM（源自HPO）的Phi处理幼苗30天，随后用10%聚乙二醇6000（PEG）诱导7天的渗透胁迫。
结果
Phi显著增加了叶片长度、宽度和数量，以及茎数。此外，在常规和渗透胁迫条件下，它都提高了叶片中叶绿素a和b、糖分和氨基酸的浓度。总之，Phi在甘蔗（CP 72-2086）增殖过程中是一种有效的无机生物刺激素，刺激幼苗生长并调节必需生物分子的浓度。
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