Piriformospora indica promotes adventitious root formation in cuttings
Piriformospora indica promotes adventitious root formation in cuttings
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DOI：
10.1016/j.scienta.2007.01.018
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发表时间：
2007-05-14
影响因子：
4.3
通讯作者：
Franken, Philipp
中科院分区：
文献类型：
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作者：
Druege, Uwe;Baltruschat, Helmut;Franken, Philipp
在离体植物嫩枝中的不定根形成是许多植物物种的营养繁殖中的关键过程，并且不充分的生根导致繁殖工业中的重大损失。基于所描述的担子菌Piriformospora indica对整株植物的各种生理影响，假设接种该内生菌的基质应促进插条不定根的产生和生长。通过接种试验研究了印度杨对3种植物不定根的影响。接种印度杨显著增加了天竺葵和一品红不定根的数量和长度。根定殖参数表明，内生菌和插条之间的相互作用已经发生物理接触之前。相比之下，矮牵牛对印度牵牛接种没有表现出生根反应。这种植物中非常快的根形成表明，建立促进作用需要真菌-植物相互作用的最短时间。基于籼稻的生物技术被认为是一种新的工具，用于改进具有低至中等不定根形成能力的植物物种或品种的植物繁殖系统。(C)2007 Elsevier B. V.保留所有权利。
Adventitious root formation in excised plant shoots is a crucial process in the vegetative propagation of many plant species, and insufficient rooting causes substantial losses in the propagation industry. Based on the various physiological effects on whole plants described for the basidiomycete Piriformospora indica, it was hypothesized that inoculation of the substrate with this endophyte should promote the generation and growth of adventitious roots in cuttings. Inoculation experiments were conducted to study the effects of P. indica on adventitious rooting in three plant species. Inoculation with P. indica dramatically enhanced the number and length of the adventitious roots in pelargonium and poinsettia. Root colonization parameters suggest that the interaction between the endophyte and cuttings had already occurred before physical contact. In contrast, petunia showed no rooting response to P. indica inoculation. Very fast root formation in this plant indicates that a minimum time period for the fungus-plant interaction is required for establishment of a promoting effect. P. indica-based biotechnology is proposed as a new tool for improving plant propagation systems of plant species or cultivars with low to moderate capacity of adventitious root formation. (C) 2007 Elsevier B.V. All rights reserved.