Knowledge Management System of Northwest Institute of Plateau Biology, CAS
DYNAMIC DISTRIBUTION OF CALCIUM IN THE STIGMA AND STYLE OF LILY AFTER POLLINATION | |
Tang, Nan1,2; Yan, Jinyan3; Li, Yi2; Tang, Daocheng1,3 | |
2017-12-01 | |
发表期刊 | PAKISTAN JOURNAL OF BOTANY |
ISSN | 0556-3321 |
卷号 | 49期号:6页码:2419-2427 |
文章类型 | Article |
摘要 | Lilies are ornamental plants of global importance, yet cross incompatibility remains a major problem in breeding programmes. Calcium plays an essential role in the sexual reproduction of flowering plants. However, the regulatory mechanisms of calcium distribution during the fertilization process are unclear at present. An accurate assessment of calcium ions in pollinated styles can help to substantiate the role of calcium in pollination. In the current study, Lilium pumilum DC. and two Asiatic Lilium cultivars ('Pollyanna' and 'Prato') were used for crossing. Three cross combinations with different compatibilities were selected. The style of the female parent was collected before and after pollination at different stages. The amount of exudate in the stylar canal was estimated at the same time points. The style was cut into four different segments using an ultramicrotome and calcium ions were localized using potassium pyroantimonate. Calcium precipitates were examined and photographed using transmission electron microscopy. The results showed that the amount of exudate in the style increased prominently following pollination in compatible crosses ('Prato' x 'Pollyanna'). The amount of calcium in the stigma increased after pollination, particularly significantly so in incompatible crosses ('Prato' x L. pumilum). The amount of calcium in the canal cells and vascular bundles of the style was greater than in the adjacent parenchyma cells. In the style of compatible crosses, calcium was obviously transferred from the top to the base in the canal cells and vascular bundles, and a rising calcium gradient was ultimately formed. It is speculated that a rapid increase and high concentration of calcium in the stigma of the female parent could negatively impact pollen tube growth. Instead, abundant calcium in the style appears to promote the growth of the pollen tube towards the ovary. |
关键词 | Lilium Pumilum Calcium Potassium Pyroantimonate Stigma Style Lily |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
关键词[WOS] | SELF-INCOMPATIBILITY RESPONSE ; GROWING POLLEN TUBES ; RUSCUS-ACULEATUS L ; LILIUM-LONGIFLORUM ; PAPAVER-RHOEAS ; CANAL EXUDATE ; IN-VITRO ; GROWTH ; GERMINATION ; IONS |
收录类别 | SCI |
语种 | 英语 |
项目资助者 | National Natural Science Foundation of China(31660582) ; amp ; apos ; State Key Laboratory Breeding Base-Key Laboratory of Qinghai Province for Plateau Crop Germplasm Innovation and Utilizationamp ; apos ; (2013-07) |
WOS研究方向 | Plant Sciences |
WOS类目 | Plant Sciences |
WOS记录号 | WOS:000419150400043 |
出版者 | PAKISTAN BOTANICAL SOC |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/13300 |
专题 | 中国科学院西北高原生物研究所 |
通讯作者 | Li, Yi; Tang, Daocheng |
作者单位 | 1.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Qinghai, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China 3.Qinghai Univ, Plateau Flower Res Ctr, Key Lab Qinghai Prov Landscape Plants Res, Xining 810016, Qinghai, Peoples R China |
推荐引用方式 GB/T 7714 | Tang, Nan,Yan, Jinyan,Li, Yi,et al. DYNAMIC DISTRIBUTION OF CALCIUM IN THE STIGMA AND STYLE OF LILY AFTER POLLINATION[J]. PAKISTAN JOURNAL OF BOTANY,2017,49(6):2419-2427. |
APA | Tang, Nan,Yan, Jinyan,Li, Yi,&Tang, Daocheng.(2017).DYNAMIC DISTRIBUTION OF CALCIUM IN THE STIGMA AND STYLE OF LILY AFTER POLLINATION.PAKISTAN JOURNAL OF BOTANY,49(6),2419-2427. |
MLA | Tang, Nan,et al."DYNAMIC DISTRIBUTION OF CALCIUM IN THE STIGMA AND STYLE OF LILY AFTER POLLINATION".PAKISTAN JOURNAL OF BOTANY 49.6(2017):2419-2427. |
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