gravitropism

Gravitropism have been studied extensively using Arabidopsis genetics , but the exact mechanisms are not fully understood .

根的向重力性在拟南芥中已被广泛研究，但是向重力性的机理还没有被完全研究清楚。

The Abnormal Root Gravitropism in a No-lateral-root Mutant of Rice

水稻无侧根突变体的根向重力性异常

Comparison on Rice Agronomic Characters of Gravitropism Mutant and Its Wild Type

水稻向重力性突变体与野生型农艺性状的比较

Identification and Gene Mapping of a Gravitropism Mutant in Rice

水稻向地性突变体的鉴定与遗传和定位分析

The responses to plant gravitropism can be divided into three stages : gravity perception , signal transduction and asymmetric growth .

植物对重力的反应过程可分为三个阶段：重力感受、信号转导和不对称生长反应。

Strong unilateral red light ( 1000Lux ) reversed the gravitropism , changing it from negative to positive .

在高光照强度下（1000Lux），红光可逆转拟茎体的负向重力性为正向重力性。

The research of gravitropism is very important to clarify the function of gravity to biological evolution and help developing cultivation techniques in different gravity environments .

研究根向重力性对于阐明地球重力在生物进化进程中的作用和空间不同重力环境中发展植物栽培技术具有重要意义。

Gravitropism is very important for plant to take up the water , mineral ions and to harvest light , which are necessary for growth and development .

植物向重力性反应对其生长发育有着重要的生理作用，直接影响到植物体从外界获得水分、矿物质及光能等生长必需物质。

Effects of Applied Gibberellins on Negative Gravitropism and Wood Formation in Horizontally-Positioned Fraxinus mandshurica Seedlings

赤霉素对水平放置水曲柳幼苗的负向重性和木材形成的影响

These results indicate that not only the differentiation of gelatinous fibers but also xylem increment is important in the negative gravitropism .

该结果说明，胶质纤维的分化和木质部的增加对负向重性都是重要的；

A number of genes had been mapped and cloned so far , which could be more helpful to understand the plant gravitropism .

迄今人们定位、克隆了一些与向重力性相关的基因，对基因产物在植物向重力性反应中所起的生理生化作用逐渐清楚，对植物向重力性机理的认识取得了很大进展。

Gravitropism of plant roots is one of the important factors determining the spatial pattern of root growth and thus may have a great effect on nutrient uptake .

植物根系向地性是决定根系空间生长趋势的主要因素之一，对于养分吸收具有重要影响。

Nowadays , studies on gravitropism and phototropism are active aspects in the field of plant physiology , many details of which have been studied .

植物的向重力性和向光性是目前植物生理学领域研究的热点，已进行了大量的研究。

Ground_Based Studies on Plant Gravitropism

植物向重性地基研究

Abundant studies showed that the shoot growth direction are regulated by illumination and gravity . Many mutants with creeping habit have been identified to be related to loss or reduced gravitropism .

大量研究表明植物枝条的生长方向是光和重力调控茎生长的结果，大多数匍匐生长突变体都与其地上部的重力丧失或钝感有关。

Lateral root development and gravitropism are regulated by polar auxin transport ( PAT ), and auxin efflux inhibitors ( AEI ) inhibit LR growth and tropism .

生长素极性运输（polarauxintransport，PAT）对侧根发生和根尖向地性起着重要的调节作用，添加外源生长素极性运输抑制剂不仅抑制了侧根发生，同时还使根尖丧失了向地性。

So extremely probably , ETH affects the gravitropism via auxin . In this case , such mutants might be used as the ideal model plants for the study of the closs-talk between ETH and auxin .

因此，ETH有可能通过调控Auxin这个中心因素来影响向重力性反应，这些乙烯突变体极可能成为研究ETH对Auxin作用的理想模式材料。

These results provide evidence for the molecular mechanism of development of peanut fruit-needle and pod , also provide new clues for the study of regulatory mechanism of physiological phenomena , such as plant gravitropism , negative phototropism and thigmotropism .

这些结果为进一步认识花生果针与荚果发育的分子调控机制提供证据，同时也为研究植物向重力性、负向光性、向触性等生理现象的调控机制提供新线索。

Ca2 + plays an important regulation role in regulation of signal transduction of tropism as the second messenger of inside and out of cells . The effect of Ca2 + on signal transduction during phototropism and gravitropism movements was summarized on stress .

Ca2+作为细胞内、外信号的重要的第二信使，在向性运动的信号转导中起了重要的调节作用，着重综述了Ca2+在向光性和向重性运动的信号转导中的作用。