Metabolomic analyses during chayote (Sechium edule var. virens levis) seed germination under the influence of growth regulators

IF 5.4 Q1 PLANT SCIENCES Current Plant Biology Pub Date : 2024-10-24 DOI:10.1016/j.cpb.2024.100407

Yeimy C. Ramírez–Rodas , Ma. de Lourdes Arévalo–Galarza , Jorge Cadena–Iñiguez , Ramón M. Soto–Hernández , Cecilia B. Peña–Valdivia , José A. Guerrero–Analco , Juan L. Monribot–Villanueva , Rubén San Miguel-Chávez

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Abstract

The fruit of chayote (Sechium edule) has a recalcitrant seed, as a consequence, viviparism (seed germination inside the fruit) occurs in the first 13 days after harvest. However, at the moment no phytohormone–dependent metabolic changes have been described that would allow us to understand the hormonal relationship during germination. Untargeted and targeted metabolomic analyses were performed on chayote seed treated with plant growth regulators, evaluated in fruits at 7 and 10 days after harvest. Exogenous application of 2–chloroethylphosphonic acid (ethylene releaser) and gibberellic acid₃ accelerated germination and viviparism, while auxins and abscisic acid delayed them. Metabolic pathways and possible key metabolites regulating germination were identified, including ethylene, gibberellins, auxins and abscisic acid. This study suggests a likely hormone interaction model during chayote seed germination.

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受生长调节剂影响的辣木（Sechium edule var. virens levis）种子萌发过程中的代谢组分析

辣木（Sechium edule）的果实具有顽固的种子特性，因此在收获后的头 13 天内就会发生活体萌发（种子在果实内萌发）。然而，目前还没有植物激素依赖性代谢变化的描述，因此我们无法了解萌发过程中的激素关系。我们对使用植物生长调节剂处理过的夏玉米种子进行了非靶向和靶向代谢组学分析，并对收获后 7 天和 10 天的果实进行了评估。外源应用 2-氯乙基膦酸（乙烯释放剂）和赤霉素3 加快了萌发和胎生，而辅酶和脱落酸则延迟了萌发和胎生。研究确定了调节萌芽的代谢途径和可能的关键代谢物，包括乙烯、赤霉素、辅酶和脱落酸。这项研究提出了在油茶籽萌发过程中可能存在的激素相互作用模型。

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来源期刊

Current Plant Biology Agricultural and Biological Sciences-Plant Science

CiteScore

10.90

自引率

1.90%

发文量

审稿时长

50 days

期刊介绍： Current Plant Biology aims to acknowledge and encourage interdisciplinary research in fundamental plant sciences with scope to address crop improvement, biodiversity, nutrition and human health. It publishes review articles, original research papers, method papers and short articles in plant research fields, such as systems biology, cell biology, genetics, epigenetics, mathematical modeling, signal transduction, plant-microbe interactions, synthetic biology, developmental biology, biochemistry, molecular biology, physiology, biotechnologies, bioinformatics and plant genomic resources.