干旱区生态环境知识资源中心(Arid): 耐盐锻炼黑果枸杞适应盐胁迫的特征

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	耐盐锻炼黑果枸杞适应盐胁迫的特征
其他题名	Characteristics of Lycium ruthenicum adapting to salinization stress after salt tolerance training
	冯雷; 徐万里; 唐光木; 张云舒; 顾美英
来源期刊	北京林业大学学报
ISSN	1000-1522
出版年	2020
卷号	42 期号:12 页码:83-90
中文摘要	【目的】明确耐盐锻炼黑果枸杞适应长期盐渍化胁迫的机理,为其修复极端干旱区盐渍化土壤提供依据。【方法】应用回归分析及主成分分析低盐胁迫(MSS)、中盐胁迫(HSS)和高盐胁迫(SS)土壤黑果枸杞各器官K~+、Na~+和Ca~(2+)区隔化特征,器官干质量和根系形态对盐胁迫的响应。【结果】( 1)NaCl浓度小于183.63 mmol/L,耐盐锻炼黑果枸杞植株成活率随着NaCl浓度增加而增大,NaCl浓度≥ 355.88 mmol/L植株全部死亡。随着NaCl浓度升高,花期到初果期果实相对生长速率显著减缓,初果期到果实完全成熟期果实相对生长速率加快。(2)HSS处理的根K~+和Na~+显著高于MSS和SS,茎中K~+、Na~+和Ca~(2+)含量均显著低于MSS和SS。HSS处理的根和茎中K~+/Na~+ 和Ca~(2+)/Na~+差异不显著。SS处理的叶Ca~(2+)分别是MSS和HSS的5和3倍。SS处理的根和茎Na~+含量没有显著差异,根和叶 Ca~(2+)含量也没有显著差异。胁迫程度从MSS上升到SS,茎中Na~+含量平均增加0.78 g/kg。(3)PCA分析表明,主成份1(PCA1)和主成份2(PCA2)共解释了黑果枸杞适应盐胁迫的73.9%。PCA1可解释黑果枸杞盐胁迫的 57.8%信息,其中,地上器官干质量对PCA1贡献最大,按照对PCA1贡献率大小排序为叶干质量、茎干质量、根干质量和主根直径。PCA1与根Na~ +含量、地上器官Na~+含量和侧根直径呈显著负相关。株高、根Ca~(2+)含量、茎粗、地上器官K~+/Na~+、根干质量、主根直径与PCA1呈正相关。植株K~+/Na~+、根系K~+/Na~+、根际土壤K~+/Na~+、根Ca~(2+)含量和地上器官Ca~(2+)含量可以解释PCA2盐胁迫的16.1%信息,上述指标均与PCA2呈显著负相关。【结论】随着盐胁迫程度增加,叶维持高浓度Ca~(2+)调控植株体K~+/Na~+,根和茎富集储存Na~+能力显著增强,说明经过耐盐锻炼黑果枸杞倾向于不同器官协同分担盐胁迫以适应长期盐胁迫。
英文摘要	[Objective] For soil salinization restoration and sustainability in extreme arid areas, we investigated Lycium ruthenicum adapting to long-term salinization stress. [Method] The K~+, Na~+ and Ca~(2+) compartmentalization of organs of L. ruthenicum in low salt stress (MSS), middle salt stress (HSS) and high salt stress (SS) soil were analyzed by regression analysis and principal component analysis, as well as the responses of dry mass and root morphology to salt stresses. [Result] (1) If concentration of NaCl at soil solution was below 183.63 mmol/L, the survival rate of salt-tolerance training plants increased with increasing concentration of NaCl, and all the plants died if concentration of NaCl was above 355.88 mmol/L. With increase of NaCl concentration, the relative growth rate of fruit significantly slowed down from flowering to early fruit, while accelerated from early fruit to full maturity. (2) The root K~+ and Na~+ treated by HSS were significantly higher than those treated by MSS and SS, and the contents of K~+, Na~+ and Ca~(2+) in stems were significantly lower than those treated by MSS and SS. There was significant differences neither K~+/Na~+ nor Ca~(2+)/Na~+ between roots and stems in HSS. The leaf Ca~(2+) in SS treatment was 5 and 3 folds of MSS and HSS, respectively. There was no significant difference in Na~+ content between roots and stems, and no significant difference in Ca~(2+) content between roots and leaves. The stress increased from MSS to SS, the content of Na~+ in the stem increased by 0.78 g/kg on average. (3) PCA analysis showed that principal component 1 (PCA1) and principal component 2 (PCA2) explained 73.9% information of L. ruthenicum under salt stress. PCA1 explained 57.8% of the salt stress of L. ruthenicum. Among them, dry mass of overground organs contributed the most to PCA1. According to these contributions to PCA1, leaf dry mass, stem dry mass, root dry mass and taproot diameter were to be top four. PCA1 was negatively correlated with Na~+ content both in roots and aboveground organs and lateral root diameter. Plant height, root Ca~(2+) content, stem diameter, aboveground organ K~+/Na~+, root dry mass and taproot diameter were positively correlated with PCA1. The content of plant K~+/Na~+, root K~+/Na~+, rhizosphere soil K~+/Na~+, root Ca~(2+) and aboveground organ Ca~(2+) could explain 16.1% of PCA2. [Conclusion] With the increase of salt stress, leaves maintained high concentration of Ca~(2+) to regulate plant K~+/Na~+, and root and stem enrichment and storage capacity of Na~+ were significantly enhanced, which indicate that L. ruthenicum tends to share salt stress cooperatively in different organs to adapt to long-term salt stress after salt tolerance training.
中文关键词	半致死剂量 ; 离子区隔化 ; 黑果枸杞 ; 盐胁迫 ; 耐盐锻炼
英文关键词	half lethal dose ion compartmentalization Lycium ruthenicum salt stress salt-tolerance training
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:6895418
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353322
作者单位	冯雷, 新疆农业科学院土壤肥料与农业节水研究所;;西北农林科技大学资源环境学院, ;;, 乌鲁木齐;;杨凌, 新疆;;陕西 830000;;712100, 中国. 徐万里, 新疆农业科学院土壤肥料与农业节水研究所, 乌鲁木齐, 新疆 830000, 中国. 唐光木, 新疆农业科学院土壤肥料与农业节水研究所, 乌鲁木齐, 新疆 830000, 中国. 张云舒, 新疆农业科学院土壤肥料与农业节水研究所, 乌鲁木齐, 新疆 830000, 中国. 顾美英, 新疆农业科学院微生物应用研究所, 乌鲁木齐, 新疆 830091, 中国.
推荐引用方式 GB/T 7714	冯雷,徐万里,唐光木,等. 耐盐锻炼黑果枸杞适应盐胁迫的特征[J],2020,42(12):83-90.
APA	冯雷,徐万里,唐光木,张云舒,&顾美英.(2020).耐盐锻炼黑果枸杞适应盐胁迫的特征.北京林业大学学报,42(12),83-90.
MLA	冯雷,et al."耐盐锻炼黑果枸杞适应盐胁迫的特征".北京林业大学学报 42.12(2020):83-90.