Ethyl methanesulfonate (EMS) mediated dwarfing mutation provides a basis for CaCO3 accumulation by enhancing photosynthetic performance in Ceratostigma willmottianum Stapf

IF 4.2 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2024-11-05 DOI:10.1111/plb.13737
L. Guo, J. Lai, T. Lei, C. Liu, J. Li, L. Yang, S. Gao
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引用次数: 0

Abstract

甲磺酸乙酯(EMS)介导的矮化突变通过提高 Ceratostigma willmottianum Stapf.
Ceratostigma willmottianum Stapf 是中国特有的白垩腺(盐分泌)植物,其盐腺结构可排出白色碳酸钙(CaCO3)晶体,具有潜在的生物矿化和固碳功能。由于野生种质资源分布狭窄,新品种缺乏多样性,难以满足商业开发和科学探索的需要。因此,我们利用甲基磺酸乙酯(EMS)诱变技术获得了新的矮化突变种质,并对其形态、生长、光合作用、盐腺和排泄物等性状进行了分析。四个矮化突变株系(DM1、DM2、DM3 和 DM4)均表现出极度矮化(株高分别降低 62.28%、62.28%、74.55% 和 61.68%)、生长速度加快、地下根生物量增加、花芽分化和开花提前。光合能力增强:DM 突变体叶片的叶绿素含量、PSII 最大量子产率(Fv/Fm)、PSII 有效量子产率(ΦPSII)、光化学淬灭系数(qP)、电子转移率(ETR)、净光合作用(Pn)、细胞间 CO2 浓度(Ci)、气孔导度(Gs)和蒸腾作用(Tr)均显著提高。单位叶面积的盐腺密度和单个盐腺的平均 Ca2+ 排泄速率明显增加(尤其是 DM2),单位叶面积的 CaCO3 积累比野生型高 28.57%。皮尔逊相关分析表明,光合作用能力与 CaCO3 的排泄量呈显著正相关。上述研究不仅丰富了C. willmottianum的新种质,而且为研究盐腺排泄CaCO3的机理和生物矿化固碳能力提供了重要的研究材料。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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