DETERMINISM OF THE MYCORRHIZOGENIC ROOT-FORMATION IN PINUS-PINASTER SOL
DETERMINISM OF THE MYCORRHIZOGENIC ROOT-FORMATION IN PINUS-PINASTER SOL
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DOI：
10.1111/j.1469-8137.1981.tb03226.x
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发表时间：
1981-01-01
期刊：
影响因子：
9.4
通讯作者：
DAVID, A
中科院分区：
文献类型：
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作者：
FAYE, M;RANCILLAC, M;DAVID, A
对松实生苗、腋芽和根尖分生组织进行了观察。在不同的受控环境中使用。根形态发生的动力学研究进行，光镜和电镜分析的支持。在没有任何共生或寄生真菌的情况下，在所有类型的外植体和使用的所有环境条件下观察到短根（组织学上类似于外生真菌，除了没有真菌），能够产生二歧分支。因此，这些菌根短根的形成是基因组依赖的。在无性系的年轻的小植株（产生的营养繁殖通过腋芽在体外），根系表现出类似的强度（强或弱）二分;这强调了菌根短根的形成和松树基因组之间的关系。这项研究似乎是第一次尝试证明，在受控条件下，植物基因组和木本植物的根分枝之间的直接关系。
Seedlings, axillary buds and apical root meristems of P. pinaster Sol. were used in different controlled environments. A kinetic study of root morphogenesis was performed, supported by light and electron microscopic analysis. Without any symbiotic or parasitic fungus, short roots (histologically similar to the ectomycorrhizae except for the absence of the fungus), able to produce dichotomous branches, were observed on all the kinds of explant and in all the environmental conditions used. Hence, the formation of these mycorrhizogenic short roots is genome dependent. In clones of young plantlets (produced by vegetative propagation by means of axillary budding in vitro), the root systems exhibit a similar intensity (strong or weak) to dichotomize; this emphasizes the relationships between the formation of mycorrhizogenic short roots and the pinus genome. This study seems to be the first attempt to demonstrate, under controlled conditions, a direct relationship between plant genome and root branching in a woody species.