ORIGIN OF GAMETANGIA IN HETEROTHALLIC ISOLATES OF BREMIA-LACTUCAE

被引：17

作者：

MICHELMORE, RW ^{[1
]}

INGRAM, DS ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, SCH BOT, CAMBRIDGE CB2 3EA, ENGLAND

来源：

TRANSACTIONS OF THE BRITISH MYCOLOGICAL SOCIETY | 1981年 / 76卷 / JUN期

关键词：

D O I：

10.1016/S0007-1536(81)80069-1

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The formation of gametangia by heterothallic isolates of B. lactucae [the cause of downy mildew] was investigated by light microscopy of fresh infected lettuce [Lactuca sativa] cotyledon and by scanning electron microscopy of chemically fixed and cryofixed cotyledons. Techniques were developed to produce paradermal fracture planes in the infected tissue which was examined in the scanning electron microscope. These investigations revealed that gametangia were formed as a result of a complex interaction between 2 or more vegetative hyphae in close physical association, followed by proliferation of sexual hyphae. Antheridia were attached paragynously to oogonia. The observations support the experimental demonstration of heterothallism in B. lactucae.

引用

页码：425 / 432

页数：8

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