Effect of LED Irradiation with Different Red-to-Blue Light Ratios on Growth and Functional Compound Accumulations in Spinach (Spinacia oleracea L.) Accessions and Wild Relatives

Plants, Год журнала: 2025, Номер 14(5), С. 700 - 700

Опубликована: Фев. 24, 2025

The utilization of red and blue light-emitting diode (LED) lights for cultivating leafy vegetables in closed plant factories has increased recent years. This study examined the growth biosynthesis functional compounds twelve Spinacia accessions, including cultivars wild relatives, under irradiation fluorescent light three different red-to-blue LED combinations (red:blue = 1:1, 1:3, 3:1). Results showed that, except Japanese cultivars, fresh weight most spinach accessions when comprised 50–75% light’s spectral composition. indicated vital role red-light photoreceptor phytochrome inducing growth. contribution blue-light photoreceptors was also notable. Significant variations accumulation amino acids sugars were observed specific accessions. effects photons on primary metabolite pathways probably leading causes these variations. Some critical enzymes Gamma-aminobutyric acid (GABA) shunt cycle asparagine glycolysis suggested as rate-limiting enzymes, which determined compounds. Among ‘CGN09429’, ‘CGN09511’, S. turkestanica ‘CGN25013’ identified potential breeding materials, while red:blue 1:1 optimal ratio a closed-cultivation system.

Язык: Английский

Nitrogen at the crossroads of light: Integration of light signalling and plant nitrogen metabolism

Journal of Experimental Botany, Год журнала: 2024, Номер 76(3), С. 803 - 818

Опубликована: Ноя. 14, 2024

Plants have developed complex mechanisms to perceive, transduce, and respond environmental signals, such as light, which are essential for acquiring allocating resources, including nitrogen (N). This review delves into the interaction between light signals N metabolism, emphasizing light-mediated regulation of uptake assimilation. Firstly, we examine details assimilation, focusing on light-responsive activity nitrate reductase (NR) transporters. Secondly, discuss influence N-dependent developmental plasticity, elucidating how availability regulates crucial transitions flowering time, shoot branching, root growth, well modulates these processes. Additionally, consider molecular signalling, photoreceptors transcription factors HY5, necessary assimilation under varying conditions. A recent understanding signalling perception low is also highlighted. The in silico transcriptome analysis suggests a reprogramming genes by shade, identifies NLP7, bZIP1, CPK30, CBL1, LBD37, LBD38, HRS1 regulators integrating light-regulated metabolism.

Язык: Английский