Feng Ying, Zheng Kailing, Lin Xiulian, Huang Junpo
School of Resource and Environmental Science, Quanzhou Normal University, Donghai Street, Quanzhou City, Fujian Province, 362000, China.
Quanzhou Institute of Agricultural Science, Chidian Town, Jinjiang City, Fujian Province, 362000, China.
Conserv Physiol. 2022 May 7;10(1):coac016. doi: 10.1093/conphys/coac016. eCollection 2022.
Natural forests of have been seriously damaged because of the extreme demand for leaf medicinal uses, making conservation of this valuable, medicinal woody species necessary. Because of geographical differentiation and diverse adaptability, in this study we analysed the variations in plant growth and physiological response to environmental factors at a resource plantation of conservation and determined the homological relationships between local provenance (from Fujian Province, FJ) and introduced provenances showing high-survival rate and better growth (from Zhejiang, Hubei, Guizhou and Jiangxi Province). Our results suggested the following: (i) Plant growth: FJ had the highest plant height but not the largest basal diameter in comparison to that of other provenances. (ii) Physiological responses during the growth periods: water content in leaf of FJ had similar change with that of other provenances, except for the provenance from Guizhou Province; total soluble sugar content in leaf of FJ was more than that of other provenances; calcium content in leaf of all provenances was higher as compared to K, Mg and Na; the highest activity among four kinds of antioxidant enzymes in all provenances was superoxide dismutase, then was polyphenol oxidase and peroxidase, finally was catalase; and total flavonoid among three kinds of secondary metabolites in all provenances showed the greatest content, followed by polysaccharides and total triterpenoid. (iii) Relation analysis: plant growth and physiological responses related with environmental factors, especially temperature and precipitation. (iv) Homological relationships: leaf characteristics among six provenances varied in colour, area and common petiole length, but not the shape of leaf base or apex. distributed in Fujian Province showed a very close homological relationship with that distributed in Zhejiang Province by simple sequence repeat. These findings will provide knowledge on physiological response to environmental factors and aid to select suitable provenances for cultivation.
由于对其叶片药用用途的极高需求，[物种名称]的天然林已遭到严重破坏，因此有必要对这种珍贵的药用木本植物进行保护。由于地理差异和多样的适应性，在本研究中，我们分析了该保护物种资源种植园中植物生长和对环境因子的生理响应变化，并确定了当地种源（来自福建省，FJ）与引入的高成活率且生长较好的种源（来自浙江、湖北、贵州和江西省）之间的同源关系。我们的结果表明：（i）植物生长：与其他种源相比，FJ的株高最高，但基径不是最大。（ii）生长期间的生理响应：除贵州省种源外，FJ叶片的含水量变化与其他种源相似；FJ叶片中的总可溶性糖含量高于其他种源；所有种源叶片中的钙含量均高于钾、镁和钠；所有种源中四种抗氧化酶的活性最高的是超氧化物歧化酶，其次是多酚氧化酶和过氧化物酶，最后是过氧化氢酶；所有种源中三种次生代谢产物中的总黄酮含量最高，其次是多糖和总三萜。（iii）关系分析：植物生长和生理响应与环境因子相关，尤其是温度和降水。（iv）同源关系：六个种源的叶片特征在颜色、面积和叶柄长度上有所不同，但叶基部或叶尖的形状没有差异。通过简单序列重复分析，分布在福建省的[物种名称]与分布在浙江省的[物种名称]显示出非常密切的同源关系。这些发现将为了解植物对环境因子的生理响应提供知识，并有助于选择适合[物种名称]种植的种源。
