Hormonal Interplay Leading to Black Knot Disease Establishment and Progression in Plums

Ranjeet Shinde; Murali Mohan Ayyanath; Mukund Shukla; Walid El Kayal; Praveen Kumar Saxena; Jayasankar Subramanian

doi:10.20944/preprints202309.0967.v1

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preprints.org > biology and life sciences > horticulture > doi: 10.20944/preprints202309.0967.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Hormonal Interplay Leading to Black Knot Disease Establishment and Progression in Plums

Ranjeet Shinde

Murali Mohan Ayyanath

Mukund Shukla

Walid El Kayal

Praveen Kumar Saxena

Jayasankar Subramanian

Version 1 : Received: 14 September 2023 / Approved: 14 September 2023 / Online: 14 September 2023 (09:54:54 CEST)

A peer-reviewed article of this Preprint also exists.

Shinde, R.; Ayyanath, M.-M.; Shukla, M.; El Kayal, W.; Saxena, P.; Subramanian, J. Hormonal Interplay Leading to Black Knot Disease Establishment and Progression in Plums. Plants 2023, 12, 3638. Shinde, R.; Ayyanath, M.-M.; Shukla, M.; El Kayal, W.; Saxena, P.; Subramanian, J. Hormonal Interplay Leading to Black Knot Disease Establishment and Progression in Plums. Plants 2023, 12, 3638.

Abstract

Black Knot (BK) is a deadly disease of European (Prunus domestics) and Japanese (Prunus salicina) plums caused by the hemibiotrophic fungus Apiosporina morbosa. After infection, the appearance of warty black knots indicates a phytohormonal imbalance in infected tissues. Based on this hypothesis, we quantified phytohormones such as indole-3-acetic acid, tryptophan, indoleamines (N-acetylserotonin, serotonin, and melatonin), and cytokinins (zeatin, 6-benzyladenine, and 2-isopentenyladenine) in temporally collected tissues of susceptible and resistant genotypes belonging to European and Japanese plums during of BK progression. The results suggested auxin-cytokinins interplay driven by A. morbosa appears to be vital in disease progression by hampering the plant defense system. Taken together, our results indicate the possibility of using the phytohormone profile as a biomarker for BK resistance in plums.

Keywords

Apiosporina morbosa; phytohormones; plant defense; plant immunity; plant-pathogen interactions

Subject

Biology and Life Sciences, Horticulture

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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