Enhanced Properties of Chitosan Microparticles over Bulk Chitosan on the Modulation of the Auxin Signaling Pathway with Beneficial Impacts on Root Architecture in Plants

被引：22

作者：

Jose Iglesias, Maria ^{[1
]}

Lorena Colman, Silvana ^{[1
]}

Cecilia Terrile, Maria ^{[1
]}

Paris, Ramiro ^{[1
]}

Martin-Saldana, Sergio ^{[2
]}

Antonio Chevalier, Alberto ^{[2
]}

Alejandra Alvarez, Vera ^{[3
]}

Anahi Casalongue, Claudia ^{[1
]}

机构：

[1] UNMdP, CONICET, Inst Invest Biol, UE,Fac Ciencias Exactas & Nat, Funes 3250, RA-7600 Mar Del Plata, Buenos Aires, Argentina

[2] Gihon Labs Quim SRL, Calle 4 & 5 Parque Ind Gen Salvio, RA-7600 Mar Del Plata, Buenos Aires, Argentina

[3] UNMdP, Grp Mat Compuestos Termoplast, Inst Invest Ciencia & Tecnol Mat INTEMA, Fac Ingn,UE,CONICET, Ave Colon 10850,B7600, Mar Del Plata, Buenos Aires, Argentina

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2019年 / 67卷 / 25期

关键词：

Arabidopsis; auxin; chitosan microparticles; lettuce; root system architecture; GENE-EXPRESSION; S-NITROSYLATION; NITRIC-OXIDE; ARABIDOPSIS; GROWTH; NANOPARTICLES; CHITIN; AGRICULTURE; ANTIOXIDANT; MECHANISM;

D O I：

10.1021/acs.jafc.9b00907

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Improving the root system architecture (RSA) under adverse environmental conditions by using biostimulants is emerging as a new way to boost crop productivity. Recently, we have reported the characterization of novel chitosan-based microparticles (CS-MPs) with promising biological properties as rooting agents in lettuce. In this work, we demonstrated that in contrast to bulk chitosan (CS), which exerts root growth inhibition, CS-MPs promoted root growth and development from 1 to 10 mu g mL(-1) without cytotoxicity effects at higher doses in Arabidopsis and lettuce seedlings. In addition, we studied the mechanistic mode of action of CS-MPs in the development of early RSA in the Arabidopsis model. CS-MPs unchained accurate and sustained spatio-temporal activation of the nuclear auxin signaling pathway. Our findings validated a promising scenario for the application of CS-MPs in the modulation of RSA to respond to changing soil environments and improve crop performance.

引用

页码：6911 / 6920

页数：10

共 53 条

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