查询词典 auxin

New York: Academic Press, 2002: 285-341.Davies C R, Wareing P F. Auxin-directed transport of radiophosphorus in stems.

茎尖中产生并极性运输的生长素可以调控它们在植物体内运输和分配。

The traits of dedifferentiation and redifferentiation of the explants form H. sampsonii show that the calli the stem and leaf usually form buds at its parietal cells. In the presence of auxin, the parenchyma of the leaf gap at the node is initiated firstly, then, develops blastemata that form buds in a cluster on the node without callus. These show that the various parts ofthe herb differ greatly in cell initiation and organ differentiation.

研究元宝草外植体的脱分化和再分化的特点结果表明，茎段和叶片启动形成愈伤组织，其不定芽通常发生在愈伤组织的周边区，茎节叶腋的叶隙薄壁组织在激素的诱导下启动、分裂，不形成愈伤组织而直接器官分化成芽原基，并在节结处产生一圈成簇的不定芽，表明元宝草不同部位的细胞启动及器官分化调控存在差异。

The primary result reveals that the normal expression of Clone C103 is profoundly regulated by endogenous auxin in maize root tip, and the expression of Clone C103 maybe has some relationship with statolith in the periphery of central cap.

由此表明玉米根尖内源生长素影响根冠特定基因Clone C103的正常表达；Clone C103在根冠的表达位置推测该基因正常表达可能与中心根冠外周的平衡石有关。

The results showed that there was a negative relationship between H2O2 content and CAT activity, thus H2O2 content was low when CAT activity was high. There was a close relationship between H2O2 content and differentiation process. H2O2 could be an important signal transduction factor during bud differentiation. IAA oxidase activity was decreased firstly, and then increased, which affected IAA oxidase and degradation pathway and regulate ratio of cytokinin and auxin. With differentiation process continuing, PPO activity was increased, which could cause browning or vitrifaction of seedling, or even malformation.

研究结果表明，鹅掌楸组培再生过程中，过氧化氢酶活性与H2O2含量变化呈负相关，CAT活性较高时，H2O2含量则较低。H2O2含量与鹅掌楸组培苗分化进程密切相关，H2O2可能作为信号因子在芽分化过程中发挥重要作用；IAA氧化酶活性呈现先下降后增加的变化规律，从而影响IAA氧化降解途径，调控细胞分裂素与生长素含量的比值，影响鹅掌楸芽的再生；PPO活性随培养时间的增加而升高，引起组培苗的褐变或玻璃化，甚至生长畸形。

Endogenous auxin is often distributed asymmetrically throughout the plant, accumulated in certain tissues and cells.

生长素的极性运输导致其积累在某些局部组织和细胞内，形成特定梯度分布。

An assay of polar auxin transport showed that, in comparison with wild type plants, the basipetal transport activity was greatly reduced in the stem of li mutant.

形态解剖观察发现li突变体茎的形成层和韧皮部分化发育不完全，这与其生长素极性运输能力下降是一致的。

ASR1 is a gene from early auxin-responsive GH3 gene family, and the protein encoded by this gene is overexpressed in the mutant, which results in the following morphological phenotypes including dwarf, epinastic rosette leaves, and restrained lateral root formation, etc. Meanwhile, ASR1 may modify the plant defense signaling molecule salicylic acid in vivo, and therefore asr1 mutant is more susceptible to the infection from the pathogen Pseudomonas syringae.

ASR1属于生长素相关的GH3基因家族，它编码的蛋白质在突变体内过量表达，并造成植株矮化，莲座叶片向下卷曲，侧根发生受到抑制等形态表型的改变，同时，ASR1可能还参与了植物体对抗病信号分子水杨酸的调控或修饰过程，并使asr1突变体对病原菌丁香假单胞杆菌的侵染更敏感。

Thiadiazole ; acyl urea; acyl thiourea; synthesis; plant growth regulating activity; auxin activity; cytokinin activity

1； 3； 4-噻二唑；酰基脲；酰基硫脲；合成；植物生长调节活性；生长素活性；细胞分裂素活性

The cuttings were treated with auxin IBA, IAA and NAA of different concentration with rapid soaking 5—10 seco...

结果表明，6月初用5000ppm浓度IBA处理的插穗生根率达80％，这种方法可用于生产。

When auxin level was increased, callusing frequencies of Type Ⅰ,Ⅱ hairy roots were also increased, while formation of lateral root from hairy root or callus was inhibited.

随着生长激素添加浓度的增加，Ⅰ、Ⅱ型发状根的愈伤组织化程度也加大，同时也抑制了从发状根或其形成的愈伤组织上形成新的分枝侧根。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。