Gravitropism of the Basidiomycete Flammulina velutipes: Morphological and Physiological Aspects of the Graviresponse

Jan Monzer, Eva Haindl, Volker Kern, Kerstin Dressel
{"title":"Gravitropism of the Basidiomycete Flammulina velutipes: Morphological and Physiological Aspects of the Graviresponse","authors":"Jan Monzer,&nbsp;Eva Haindl,&nbsp;Volker Kern,&nbsp;Kerstin Dressel","doi":"10.1006/emyc.1994.1002","DOIUrl":null,"url":null,"abstract":"<div><p>Monzer J., Haindl, E., Kern V., and Dressel, K. 1994. Gravitropism of the basidiomycete <em>Flammulina velutipes:</em> Morphological and physiological aspects of the graviresponse. <em>Experimental Mycology,</em> 18, 7-19. The fruiting body of the basidiomycete <em>Flammulina velutipes</em> shows a distinct negative gravitropic response. Maturing fruiting bodies in the rapid elongation phase become graviresponsive with basidiospore differentiation. Lateral gravistimulation by horizontal arrangement of the fruiting body results in unilateral growth regulation. Elongation in the upper stipe side decreases to 40% during gravitropic reorientation of the fruiting body. Overshooting of the gravitropic response during reorientation is precisely regulated. The graviresponsiveness is concentrated to the apical area of the stipe, the transition zone between pileus and stipe, which features a prominent elongation capability. The small size and low vacuolization of the transition zone hyphae compared with differentiated basal stipe hyphae correspond with this physiological function on the light and electron microscopical levels. Curvature experiments using intact and explanted fruiting bodies demonstrated the graviperceptive role of the transition zone. The excision of various amounts of pilear tissue, even the disruption of the whole pileus, had no severe effect on gravitropic curvature, until the transition zone was damaged. Removal of the transition zone resulted in a dramatic loss of graviresponse, whereas the decrease of elongation was less drastic.</p></div>","PeriodicalId":12110,"journal":{"name":"Experimental Mycology","volume":"18 1","pages":"Pages 7-19"},"PeriodicalIF":0.0000,"publicationDate":"1994-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/emyc.1994.1002","citationCount":"27","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Experimental Mycology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0147597584710024","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 27

Abstract

Monzer J., Haindl, E., Kern V., and Dressel, K. 1994. Gravitropism of the basidiomycete Flammulina velutipes: Morphological and physiological aspects of the graviresponse. Experimental Mycology, 18, 7-19. The fruiting body of the basidiomycete Flammulina velutipes shows a distinct negative gravitropic response. Maturing fruiting bodies in the rapid elongation phase become graviresponsive with basidiospore differentiation. Lateral gravistimulation by horizontal arrangement of the fruiting body results in unilateral growth regulation. Elongation in the upper stipe side decreases to 40% during gravitropic reorientation of the fruiting body. Overshooting of the gravitropic response during reorientation is precisely regulated. The graviresponsiveness is concentrated to the apical area of the stipe, the transition zone between pileus and stipe, which features a prominent elongation capability. The small size and low vacuolization of the transition zone hyphae compared with differentiated basal stipe hyphae correspond with this physiological function on the light and electron microscopical levels. Curvature experiments using intact and explanted fruiting bodies demonstrated the graviperceptive role of the transition zone. The excision of various amounts of pilear tissue, even the disruption of the whole pileus, had no severe effect on gravitropic curvature, until the transition zone was damaged. Removal of the transition zone resulted in a dramatic loss of graviresponse, whereas the decrease of elongation was less drastic.

金针菇担子菌的向重力性:重力反应的形态和生理方面
Monzer J, Haindl, E, Kern V, and Dressel, K. 1994。金针菇担子菌的向重力性:重力反应的形态和生理方面。实验真菌学,18,7-19。担子菌金针菇的子实体表现出明显的负向地性响应。快速伸长期成熟的子实体随着担子孢子分化而对重力产生响应。子实体水平排列的侧向重力刺激导致单侧生长调节。在子实体向地定向过程中,茎柄上侧的伸长减少到40%。在重定向过程中,地向响应的超调是精确调节的。重力响应主要集中在茎尖区域,即茎柄与茎柄之间的过渡区,该区域具有突出的伸长能力。与分化的基柄菌丝相比,过渡带菌丝的体积小,空泡化程度低,在光镜和电镜水平上与这种生理功能相对应。完整子实体和外植子实体的曲率实验证明了过渡区的重力感知作用。切除不同数量的毛组织,甚至破坏整个毛,在过渡区被破坏之前,对向地曲率没有严重的影响。移除了过渡区导致了剧烈的重力响应损失,而伸长率的下降则不那么剧烈。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信