Alternaria Mali - Plant Defense

Plant Defense

Plants' first lines of defense against A. mali infection are the physical barrier provided by the epidermis on the primary body and the periderm on the secondary body. A. mali can still penetrate the stomates and hydathodes of leaves.

As with most pathogens, Alternaria mali resistance involves a gene-for-gene relationship. Apple trees can recognize invading pathogens and mount a defense. Often, the plant may be able to resist the pathogen, even though it has no genetic resistance to same. Apple trees seem to have a weak defense to A. mali, base on the fact that no survivors if leaves has been infected.

Read more about this topic:  Alternaria Mali

Famous quotes containing the words plant and/or defense:

    Now, what I want is, Facts. Teach these boys and girls nothing but Facts. Facts alone are wanted in life. Plant nothing else, and root out everything else. You can only form the minds of reasoning animals upon Facts: nothing else will ever be of any service to them. This is the principle on which I bring up my own children, and this is the principle on which I bring up these children. Stick to Facts, sir!
    Charles Dickens (1812–1870)

    Unlike Boswell, whose Journals record a long and unrewarded search for a self, Johnson possessed a formidable one. His life in London—he arrived twenty-five years earlier than Boswell—turned out to be a long defense of the values of Augustan humanism against the pressures of other possibilities. In contrast to Boswell, Johnson possesses an identity not because he has gone in search of one, but because of his allegiance to a set of assumptions that he regards as objectively true.
    Jeffrey Hart (b. 1930)