Physiological integration ameliorates negative effects of water stress in salt-sensitive 'c198' common bermudagrass
文献类型：期刊论文
| 作者 | Amombo, Erick1,2; Hu, Longxing1,2; Fan, Jibiao1,2; Hu, Zhengrong1,2; Fu, Jinmin1 |
| 刊名 | Journal of the american society for horticultural science
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 140期号:3页码:288-294 |
| 关键词 | Cynodon dactylon Ramets Drought Antioxidant enzymes |
| ISSN号 | 0003-1062 |
| 通讯作者 | Fu, jinmin(jfu@wbgcas.cn) |
| 英文摘要 | Clonal plants can consist of connected individual ramets that enhance resource sharing through physiological integration. this integration enables the whole clone to tolerate environmental stresses. the objective of this research was to investigate the effects of physical ramet connections on the integration of antioxidant enzymes in clonal common bermudagrass (cynodon dactylon) growing under heterogeneously distributed water; i.e., nonuniform distribution of water due to 20% polyethylene glycol (peg 6000) treatment on some ramets and not others. the bottom, middle, upper and three fragments of clonal common bermudagrass were subjected to 20% peg 6000 with water potential of -1.8 mpa to induce heterogeneous and homogeneous drought stress. the control was not treated with 20% peg 6000. within the heterogeneous treatment, water stressed clonal fragments generally had higher leaf and root antioxidant enzyme activities with respect to superoxide dismutase, catalase, peroxidase (except for root peroxidase). there was no difference in antioxidant enzyme activity within the connected clonal ramets for homogeneous treatment; i.e., three connected ramets treated with 20% peg 6000. osmotically stressed clonal fragments under heterogeneous environments had a lower level of malonaldehyde (mba) compared with those in homogeneous regimes. the antioxidant enzyme integration was affected by directionality and water availability contrast. this was indicated by significant decline in mda levels within the heterogeneous treatments as compared with homogeneous treatment, which suggested reduced lipid peroxidation. these results suggested that ramet connections facilitate integration of antioxidant enzymes within clonal plants growing in heterogeneously available water. enzymes were integrated from clonal fragments growing in water sufficient environment to those in water stressed regimes. this enhanced reactive oxygen species scavenging capacity of the entire clone hence improved drought tolerance. |
| WOS关键词 | HERB GLECHOMA-HEDERACEA ; PHENOTYPIC PLASTICITY ; CLONAL INTEGRATION ; GENE-EXPRESSION ; MODULAR CONCEPT ; DROUGHT STRESS ; WHITE CLOVER ; PLANTS ; GROWTH ; LEAVES |
| WOS研究方向 | Agriculture |
| WOS类目 | Horticulture |
| 语种 | 英语 |
| WOS记录号 | WOS:000356632400011 |
| 出版者 | AMER SOC HORTICULTURAL SCIENCE |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376454 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Fu, Jinmin |
| 作者单位 | 1.China Univ Geosci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Amombo, Erick,Hu, Longxing,Fan, Jibiao,et al. Physiological integration ameliorates negative effects of water stress in salt-sensitive 'c198' common bermudagrass[J]. Journal of the american society for horticultural science,2015,140(3):288-294. |
| APA | Amombo, Erick,Hu, Longxing,Fan, Jibiao,Hu, Zhengrong,&Fu, Jinmin.(2015).Physiological integration ameliorates negative effects of water stress in salt-sensitive 'c198' common bermudagrass.Journal of the american society for horticultural science,140(3),288-294. |
| MLA | Amombo, Erick,et al."Physiological integration ameliorates negative effects of water stress in salt-sensitive 'c198' common bermudagrass".Journal of the american society for horticultural science 140.3(2015):288-294. |
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来源：中国科学院大学
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