Blocking intruders: inducible physico-chemical barriers against plant vascular wilt pathogens
| Autor: | Montserrat Capellades, Anurag Kashyap, Marc Planas-Marquès, Núria S. Coll, Marc Valls |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Ministerio de Ciencia e Innovación (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Indian Council of Agricultural Research, Generalitat de Catalunya |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology Plant Science Plantes Physico-chemical barriers Lignin 01 natural sciences chemistry.chemical_compound physico-chemical barriers Massive disruption Solanum lycopersicum structural defenses Vascular tissue plant-pathogen interactions Structural defenses food and beverages Inducible defenses Darwin Reviews Plants Apoplast vascular pathogens Bacteris patògens lignin Biology inducible defenses Microbiology 03 medical and health sciences suberin Vascular pathogens Suberin Xylem Structural barriers Plant Diseases Plant-pathogen interactions AcademicSubjects/SCI01210 fungi Wilting wilt Tyloses 030104 developmental biology chemistry tyloses Pathogenic bacteria Wilt Gels 010606 plant biology & botany |
| Zdroj: | Journal of Experimental Botany Dipòsit Digital de la UB Universidad de Barcelona Digital.CSIC. Repositorio Institucional del CSIC instname Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona |
| Popis: | Xylem vascular wilt pathogens cause devastating diseases in plants. Proliferation of these pathogens in the xylem causes massive disruption of water and mineral transport, resulting in severe wilting and death of the infected plants. Upon reaching the xylem vascular tissue, these pathogens multiply profusely, spreading vertically within the xylem sap, and horizontally between vessels and to the surrounding tissues. Plant resistance to these pathogens is very complex. One of the most effective defense responses in resistant plants is the formation of physico-chemical barriers in the xylem tissue. Vertical spread within the vessel lumen is restricted by structural barriers, namely, tyloses and gels. Horizontal spread to the apoplast and surrounding healthy vessels and tissues is prevented by vascular coating of the colonized vessels with lignin and suberin. Both vertical and horizontal barriers compartmentalize the pathogen at the infection site and contribute to their elimination. Induction of these defenses are tightly coordinated, both temporally and spatially, to avoid detrimental consequences such as cavitation and embolism. We discuss current knowledge on mechanisms underlying plant-inducible structural barriers against major xylem-colonizing pathogens. This knowledge may be applied to engineer metabolic pathways of vascular coating compounds in specific cells, to produce plants resistant towards xylem colonizers. Research in the lab is funded by the Spanish Ministry of Economy and Competitiveness with grants 2016-78002-R (AGL) and RyC 2014–16158 (NSC), by the Ministry of Science and Innovation / Spanish State Research Agency PID2019-108595RB-I00 / AEI / 10.13039/501100011033, and through the “Severo Ochoa Programme for Centres of Excellence in R&D” (SEV-2015-0533). AK is the recipient of a Netaji Subhas—Indian Council of Agricultural Research (ICAR) International Fellowship. This work was also supported by the CERCA Programme / Generalitat de Catalunya. |
| Databáze: | OpenAIRE |
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