Suberin Biopolymer in Rice Root Exodermis Reinforces Preformed Barrier Against Meloidogyne graminicola Infection
| Autor: | Manoranjan Dash, Tushar K. Dutta, Divya Singh, Haritha Bollinedi, Tagginahalli N. Shivakumara, Uma Rao |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Germplasm biology food and beverages Plant Science Root tip biology.organism_classification 01 natural sciences 03 medical and health sciences 030104 developmental biology Nematode Meloidogyne graminicola Suberin Exodermis Botany Rice root Cultivar Agronomy and Crop Science 010606 plant biology & botany Biotechnology |
| Zdroj: | Rice Science. 28:301-312 |
| ISSN: | 1672-6308 |
| DOI: | 10.1016/j.rsci.2021.04.008 |
| Popis: | Exploration of novel genetic resources against root-knot nematode (RKN) is necessary to strengthen the resistance breeding program in cultivated rice, and investigations on the role of genotype-specific root anatomy in conferring a structural barrier against nematode invasion are largely underexplored. Here, we reported a highly-resistant rice germplasm Phule Radha that conferred remarkably lower RKN parasitic fitness in terms of reduced penetration and delayed development and reproduction when compared with susceptible cultivar PB1121. Using histological and biochemical analyses, we demonstrated that an enhanced suberin deposition in the exodermal root tip tissue of Phule Radha compared to PB1121 can effectively form a penetrative barrier against RKN infection, and this preformed barrier in the control tissue did not necessarily alter to a greater extent when challenged with RKN stress. Using qRT-PCR analysis, we showed that a number of suberin biosynthesis genes were greatly expressed in the exodermis of Phule Radha compared to PB1121. In sum, the present study established the role of rice exodermal barrier system in defense against an important soil-borne pathogen. |
| Databáze: | OpenAIRE |
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