Abstract
Colletotrichum is a plant pathogenic fungus which is able to infect virtually every economically important plant species. Up to now no common infection mechanism has been identified comparing different plant and Colletotrichum species. Plant hormones play a crucial role in plant-pathogen interactions regardless whether they are symbiotic or pathogenic. In this review we analyze the role of ethylene, abscisic acid, jasmonic acid, auxin and salicylic acid during Colletotrichum infections. Different Colletotrichum strains are capable of auxin production and this might contribute to virulence. In this review the role of different plant hormones in plant—Colletotrichum interactions will be discussed and thereby auxin biosynthetic pathways in Colletotrichum spp. will be proposed.
Highlights
Hormones in the Interaction of Colletotrichum spp. are opportunistic plant pathogenic fungi which are able to infect virtually every economically important plant species, causing diseases commonly referred to as anthracnose
Hemibiotrophic infection begins with a biotrophic phase before the pathogen switches to the necrotrophic phase, and they are able to exist in the plant as endophytes [6,7,8]
The expression of that gene is enhanced by oxidative stress as well as infection by Colletotrichum acutatum while overexpression caused a delay in growth of strawberry plants [35]
Summary
Hormones in the Interaction of Colletotrichum spp. are opportunistic plant pathogenic fungi which are able to infect virtually every economically important plant species, causing diseases commonly referred to as anthracnose. On the other side ABA biosynthesis is enhanced when of JA, SA and ET upon infection indicate that these hormones primarily mediate the abiotic stresses like heat, drought, salinity or cold prevail [17,18]. Auxins (IAA), gibberellins (GA) and cytokines (CK) have been reported to play interactions between hormones the stress response is restricted to JA, SA, ET and a role in the regulation of the plant defense response [15,19,20]. There are other transcriptomic studies available suggesting a hormone signaling crosstalk in systemic female inflorescence inoculated with the response of different plants like Phaseolus vulgaris [22], octoploid.
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