Plant Passive Immunity: Micromorphological and Biochemical Features of the Maloideae (Rosaceae) External Tissues | Chapter 1 | Current Research Trends in Biological Science Vol. 1
The defeat of the fruits of fungal diseases is currently an
important issue of plant science and is also of great economic importance. With
the help of microscopic methods the leaves and fruits surface tissues of plants
of four genera of the Maloideae subfamily were screened: Malus Mill., Pyrus L.,
Cydonia Mill., Mespilus L. and attempts were made to explain the dependence of
mycosis damage on micro structural features. The species composition of fungi
that cause damage to the Maloideae leaves and fruits in the Russia southern
regions is analyzed. It is established that among pathogens with different
types of parasitism there are common excitants, as well as highly specialized
responses as on Mespilus germanica L. Higher resistance to the complex of
fungal diseases, in comparison with apple and pear, was found in quince and
medlar. This stability at the initial stage of the pathological process is
associated with structural features such as micro morphology of the fruits and
stomata cuticle in the abaxial epidermis of leaves. The leaves stomatal
openings of medlar are narrow with raised outgrowths, on the surface of the
fruits – the layered structure of the cuticular layer. Quince has a continuous
cuticular cover. In the species least affected by mycoses, a high content of
very-longchain fatty acids in the external tissues was revealed, which may be
one of the factors of resistance to pathogens.
In addition, the studied species revealed differences in the content of
polyphenols, which can inhibit the development of pathogens at the stage of
their penetration. Thus, during the study, using the example of the Maloideae
subfamily, we identified several factors of passive immunity of plants.
Conventionally, they can be divided into two groups: mechanical and chemical,
working at various stages of pathogen penetration into plant organism.
Author(s) Details
Alexander S. Voronkov
Timiryazev Institute of Plant Physiology RAS, 127276, Moscow, Botanicheskaya St. 35, Russia.
Tamara Kh. Kumachova
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy, 127550, Moscow, Timiryazevskaya St. 49, Russia.
Tatiana V. Ivanova
Timiryazev Institute of Plant Physiology RAS, 127276, Moscow, Botanicheskaya St. 35, Russia.
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Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/157Author(s) Details
Alexander S. Voronkov
Timiryazev Institute of Plant Physiology RAS, 127276, Moscow, Botanicheskaya St. 35, Russia.
Tamara Kh. Kumachova
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy, 127550, Moscow, Timiryazevskaya St. 49, Russia.
Tatiana V. Ivanova
Timiryazev Institute of Plant Physiology RAS, 127276, Moscow, Botanicheskaya St. 35, Russia.
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