Light spectrum differentially modulates physiology and secondary metabolism in underutilized leafy greens grown in aeroponics

IF 5.7 2区生物学 Q1 PLANT SCIENCES

Plant Physiology and Biochemistry Pub Date : 2025-09-22 DOI:10.1016/j.plaphy.2025.110546

Sara Anichini , Andrea Bellini , Giampiero Cai , Marco Romi , Sara Parri

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Abstract

Conventional agriculture faces growing concerns regarding sustainability, biodiversity, and nutritional quality. Aeroponic systems, coupled with optimized light spectra, present a potential solution for enhancing crop performance and minimizing environmental impact. This study examines the morphophysiological and antioxidant responses of four neglected and underutilized plant genetic resources leafy landraces (Cichorium intybus ‘Cicoria del Marzocco’, Cichorium endivia ‘Radicchia di Lucca’, and Lactuca sativa ‘Foglia di Cerro’ and ‘Rossina di Pescia’) grown aeroponically under different red:blue light ratios, with and without far-red light supplementation. Plants were grown under seven LED light treatments, and growth parameters, gas exchange, photosynthetic efficiency, and antioxidant profiles were assessed. The results showed genotype-specific responses to light quality. Far red light significantly increased biomass accumulation and leaf expansion in L. sativa but had little effect on Cichorium species. Blue light reduced growth but increased polyphenol and flavonoid content across all genotypes. Principal component analysis indicated that genotype had a greater effect on overall physiological variation than light treatment. These results suggest that manipulating the light spectrum can differentially affect growth and secondary metabolism in traditional leafy crops. Genotype-specific light strategies may promote the use of neglected germplasm and the development of sustainable, high-efficiency cultivation systems.

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光谱学差异调节在气培中未充分利用的绿叶蔬菜的生理和次生代谢

传统农业在可持续性、生物多样性和营养质量方面面临着越来越多的关注。气培系统，加上优化的光谱，为提高作物性能和减少环境影响提供了一个潜在的解决方案。本研究研究了四种被忽视和未充分利用的植物遗传资源，即紫苣苔（Cicoria intybus）、紫苣苔（Cicoria del Marzocco）、紫苣苔（Radicchia di Lucca）和紫苣苔（lacuca sativa）在不同红蓝光比、外加和不外加远红光条件下的形态生理和抗氧化反应。在7种LED光处理下，对植物的生长参数、气体交换、光合效率和抗氧化特性进行了评估。结果显示对光品质有基因型特异性反应。远红光显著提高了苜蓿的生物量积累和叶片扩张，但对菊苣的影响不大。蓝光降低了所有基因型的生长，但增加了多酚和类黄酮含量。主成分分析表明，基因型对整体生理变异的影响大于光处理。这些结果表明，操纵光谱可以不同程度地影响传统叶作物的生长和次生代谢。基因型特异性光策略可以促进被忽视的种质资源的利用和可持续、高效栽培系统的发展。

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来源期刊

Plant Physiology and Biochemistry 生物-植物科学

CiteScore

11.10

自引率

3.10%

发文量

410

审稿时长

33 days

期刊介绍： Plant Physiology and Biochemistry publishes original theoretical, experimental and technical contributions in the various fields of plant physiology (biochemistry, physiology, structure, genetics, plant-microbe interactions, etc.) at diverse levels of integration (molecular, subcellular, cellular, organ, whole plant, environmental). Opinions expressed in the journal are the sole responsibility of the authors and publication does not imply the editors'' agreement. Manuscripts describing molecular-genetic and/or gene expression data that are not integrated with biochemical analysis and/or actual measurements of plant physiological processes are not suitable for PPB. Also "Omics" studies (transcriptomics, proteomics, metabolomics, etc.) reporting descriptive analysis without an element of functional validation assays, will not be considered. Similarly, applied agronomic or phytochemical studies that generate no new, fundamental insights in plant physiological and/or biochemical processes are not suitable for publication in PPB. Plant Physiology and Biochemistry publishes several types of articles: Reviews, Papers and Short Papers. Articles for Reviews are either invited by the editor or proposed by the authors for the editor''s prior agreement. Reviews should not exceed 40 typewritten pages and Short Papers no more than approximately 8 typewritten pages. The fundamental character of Plant Physiology and Biochemistry remains that of a journal for original results.