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New histochemical observations of shot grapevine berries
Author(s) -
CHOLET C.,
MONDOLOT L.,
ARY C.
Publication year - 2002
Publication title -
australian journal of grape and wine research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.65
H-Index - 77
eISSN - 1755-0238
pISSN - 1322-7130
DOI - 10.1111/j.1755-0238.2002.tb00221.x
Subject(s) - berry , vitis vinifera , botany , horticulture , biology , chemistry , food science
This paper describes the histological structure of normal grape berries and of different shot grape berries during the first growth period (the first month after fertilisation). We focused our observations on a specific zone during fertilisation, i.e. the septum of the grape berries, which was treated with different histochemical reagents to selectively reveal phenolic compounds and certain tissues; each sample was examined by visible and ultraviolet light. The septum of control grape berries was always cellulosic, whereas the septum of shot grape berries featured lignified (scar) tissue typical of a wound reaction and associated with significant accumulation of flavonoid pigments not seen in normal grape berries. The origins of this lignified tissue are discussed.