果聚糖

不同组织器官的果聚糖积累、含量与转运在多数取样期存在显著或极显著的N肥水平差异，而基因型间因各器官不同取样期差异而有所不同。

Significant N fertilizer level variation existed for Fructan accumulation , concentration and translocation in different tissue organ at most sampling dates , but the genetic variation were different in different tissue organ at various sampling dates .

在不同施N水平下，果聚糖在各组织器官中的分配模式也基本相同。茎秆是贮存果聚糖最主要的营养器官，在营养生长期茎秆分配了植株果聚糖积累的73.1%～87.8%。

The pattern of fructan distibution in different tissue organ were also very similar at different N levels applied , Stems , containing about 73.3 % ~ 87.8 % of plants fructan accumulation during vegetative growing stages , were the major storage tissue organ for fructan .

42个转果聚糖合酶（PK类）基因材料；

42 transferring PK genes ;

也有果聚糖、海藻糖和蔗糖等可溶性糖类；Lea蛋白在很多植物抵御干旱胁迫过程中也起到了重要作用。

Osmolytes , Lea proteins and soluble sugars play an important role in drought-resistance in forest trees .

在多数取样期，植株干物质积累和果聚糖积累与GY和GNY呈极显著正相关，与GNC呈负相关；

Plant dry matter accumulation and plant fructan accumulation were significantly positive with GY and GNY , while negatively correlated with GNC at most sampling dates ;

从乳熟期至成熟期，随着干物质、果聚糖和氮在营养器官中积累的降低，GY、GNY和籽粒果聚糖积累快速增加。

GY , GNY and grain fructan accumulation increased sharply while dry matter , fructan and nitrogen accumulation of vegetative parts decreased from milk-ripe stage to maturity .

植株果聚糖积累和含量从拔节期逐步增加到乳熟期（0N）或开花期（200N）达到高峰。

Its increased step by step in plants from jointing to a maximum at milk-ripe stage ( 0 N ) or maturity ( 200 N ) .

茎可溶性总糖、蔗糖和果聚糖含量变化呈单峰曲线，最高含量亦出现在花后15～20d；

Contents of total soluble sugars , sucrose and fructosans in the penult stem presented single-peak curves , and their highest contents also occurred at 15 ~ 20 days after anthesis .

总麦草的果聚糖转运量为56.18g/m~2（0N）和71.6g/m~2（200N），其中的85%以上是由茎秆输出。

Fructan translocation of total straws were 56.18 g / m ~ 2 ( 0 N ) and 71.6 g / m ~ 2 ( 200 N ), stems accounted for more than 85 % .

结果：CPP-1分子质量约为7.5×104，化学结构为呋喃果糖以-β（2→1）连接而成的果聚糖。

Result : The molecular weight of CPP-1 was estimated to be 7.5 × 10 ~ 4 , and the structure of CPP-1 was a β - ( 2 → 1 ) linked β - D-fructosan .

相关分析表明转基因株系生长量、生物量和叶片含水量与果聚糖积累量呈极显著正相关，说明SacB基因的导入提高了转基因杨树对水分胁迫的抗性。

The correlation analysis indicates that the concentration of fructan in leaves of transgenic lines is most significant positively related to growth , biomass and leaf water content . The results also show that the expression of SacB gene in transgenic poplar enhances its resistance to water stress .

高等植物果聚糖分类和功能的研究进展

Progress on the Classification and Function of Fructan in Higher Plants

番茄转果聚糖合酶基因获得抗寒植株

Obtainment of Transgenic Tomato of Levansucrase Gene with Resistance to Low Temperature

果糖基转移酶融合基因转化玉米胚乳中果聚糖的积累

Fructan Accumulation in Maize Endosperm Transformed with Fused Fructosyltransferase Genes

高等植物果聚糖研究进展

Recent Progress in Studies on Fructans in Higher Plants

普通小麦营养器官氮素和果聚糖的运转

Translocation of Nitrogen and Fructan in Wheat Nutritorium

果聚糖对植物抗逆性的影响及相应基因工程研究进展

The Effect of Fructan on the Ability of Plants Resisting Stress and Correlative Gene Engineering

小麦中果聚糖合成酶基因与抗旱性关系及其分子生物学研究

Relationship between drought tolerance and fructan biosynthesis enzymes genes and molecular biological investigation in wheat

菊粉酶是天然果聚糖的水解酶，许多微生物可产生菊粉酶。

Inulinase is a hydrolase for natural Fructans , and many microbes can produce inulinase .

此外，综述了提高果聚糖积累方面的基因工程研究进展及存在的相关问题。

In addition , the gene engineering of improving fructan accumulation and correlated question were reviewed .

水氮互作对小麦土壤水分利用和茎中果聚糖含量的影响

Effects of water-nitrogen interaction on soil water utilization by wheat and fructan content in wheat stem

植物果聚糖合成酶基因克隆及特性分析

Cloning and Characterization in Structure and Function of Fructan Biosynthesis Enzymes ( FBEs ) Gene in Plant

高产冬小麦茎中果聚糖代谢及氮素水平的调控

Study on Fructans Metabolism in Stems of High-yielding Winter Wheat and Effects of Nitrogen Levels Applied on Fructans Metabolism

果糖基转移酶是口腔细菌细胞外多糖合成酶之一，它以蔗糖为底物催化合成果聚糖。

Fructosyltransferase is a kind of enzyme , which catalyzes the synthesis of fructan when sucrose is present at environment .

氮缺乏减少叶片中果聚糖的积累量，但增加茎鞘和总麦草中果聚糖的积累量。

Fructan accumulation in leaf was reduced , but that in stem and sheath and total straw were increased under nitrogen deficiency .

菊糖和大蒜果聚糖发酵液中拟杆菌、肠球菌和大肠杆菌均被抑制，菌数约下降0.36～1.05个数量级。

CFU of Bacteroides , Enterococci and Clostridium were all significantly decreased about 0.36 ~ 1.05 orders of magnitude after garlic fructans fermentation .

植物通过体内果聚糖的代谢来调节环境胁迫，它的积累可以提高植物在多种逆境胁迫下的抗逆性。

Plants response to environmental stresses through fructan metabolism , plant resistance to various environmental stresses can be improved by accumulation of fructan .

抗冻试验、叶片电导率测定、多糖含量测定的试验结果均表明，果聚糖合酶基因赋予转基因番茄良好的抗寒性状。

Anti-freezing experiments , electrical conductivities detection and content measurement of polysaccharides showed that the integrated levansucrase gene displayed some new anti-stress characters in tomato .

本论文的研究为果聚糖的生物活性、构效关系及开发应用的研究提供了一定的理论基础。

The study of this paper is to provide a theoretic foundation for the study of structure-activity relationship and to further exploitation and application of levan .

白芷根中蔗糖最高，其次是果聚糖，果糖又次之，葡萄糖含量最低。

In Angelica dahurica 's root , the content of sucrose is highest , secondly fructosan , then fructose , and the content of sucrose is lowest .