Dong Yilan, Li Ping, Zhang Chunling
Nanjing Foreign Language School, 30 East Beijing Road, Nanjing, 210008, China.
College of Plant Protection, Nanjing Agricultural University, 1 Weigang Town, Nanjing, 210095, China.
Bot Stud. 2016 Dec;57(1):22. doi: 10.1186/s40529-016-0132-z. Epub 2016 Aug 11.
The harpin protein Hpa1 has multiple beneficial effects in plants, promoting plant growth and development, increasing crop yield, and inducing plant resistance to pathogens and insect pests. In these effects, the 10-40 residue fragment (Hpa1) isolated from the Hpa1 sequence is 1.3 to 7.5-fold more effective than the full length.
This study extends the beneficial effects of Hpa1 and Hpa1 to flower development in three species of the garden balsam Impatiens and the garden scoparius Parochetus communis plant. The external application of Hpa1 or Hpa1 to the four ornamental plants had three effects, i.e., promoting flower growth, retarding senescence of fully expanded flowers, and increasing anthocyanin concentrations in those flowers and therefore improving their ornamental visages. Based on quantitative comparisons, Hpa1 was at least 17 and 42 % more effective than Hpa1 to increase anthocyanin concentrations and to promote the growth of flowers or delay their senescence.
Our results suggest that Hpa1 and especially Hpa1 have a great potential of horticultural application to increase ornamental merits of the different garden plants.
过敏蛋白Hpa1对植物具有多种有益作用，可促进植物生长发育、提高作物产量，并诱导植物对病原体和害虫产生抗性。在这些作用中，从Hpa1序列中分离出的10 - 40个氨基酸残基的片段（Hpa1）比全长蛋白的效果高1.3至7.5倍。
本研究将Hpa1和Hpa1的有益作用扩展到了三种凤仙花属植物和蓝雀花属植物蓝雀花的花发育过程中。对这四种观赏植物外源施用Hpa1或Hpa1有三种效果，即促进花的生长、延缓完全开放花朵的衰老，以及增加这些花朵中的花青素浓度，从而改善其观赏面貌。基于定量比较，在增加花青素浓度以及促进花的生长或延缓其衰老方面，Hpa1比Hpa1至少有效17%和42%。
我们的结果表明，Hpa1尤其是Hpa1在园艺应用方面具有巨大潜力，可提高不同园林植物的观赏价值。
