Novel Aspects of Nitrate Regulation in Arabidopsis

Abstract

Nitrogen (N) is one of the most essential macronutrients for plant growth and development. Nitrate (NO3–), the major form of N that plants uptake from the soil, acts as an important signaling molecule in addition to its nutritional function. Over the past decade, significant progress has been made in identifying new components involved in NO3– regulation and starting to unravel the NO3– regulatory network. Great reviews have been made recently by scientists on the key regulators in NO3– signaling, NO3– effects on plant development, and its crosstalk with phosphorus (P), potassium (K), hormones, and calcium signaling. However, several novel aspects of NO3– regulation have not been previously reviewed in detail. Here, we mainly focused on the recent advances of post-transcriptional regulation and non-coding RNA (ncRNAs) in NO3– signaling, and NO3– regulation on leaf senescence and the circadian clock. It will help us to extend the general picture of NO3– regulation and provide a basis for further exploration of NO3– regulatory network.

Effect of Plasma Activated Water on Peanut Seed Germination, Seedling Biomass, Morphology, and Gene Expression

“…This nding suggests that the positive effects of plasma treatment on plant growth may be attributed to the activation of speci c genes that are involved in regulating growth and may occur through the nitrogen pathway. Nitrogen is a critical component of plant growth, as it is an essential element to produce amino acids, nucleic acids, and proteins [21,22]. As a powerful signal, nitrate can regulate plant growth and development, stimulating primary root growth through enhanced meristem activity and cytokinin signaling [23].…”

Integrative Transcriptomic and Metabolomic Analysis at Organ Scale Reveals Gene Modules Involved in the Responses to Suboptimal Nitrogen Supply in Tomato

“…Using different approaches, TFs like NLP6/7, TCP20, TGA1/4, SPL9, or ANR1 have been reported to regulate different genes involved in nitrogen uptake, assimilation, and metabolism as well as growth responses to nitrogen [36,38,39]. In addition, several miRNAs and lncRNAs have been described as being involved in nitrogen regulation in Arabidopsis and crops [40]. Besides, posttranslational modifications through protein phosphorylation have also emerged to play an important role in the regulation of N sensing, uptake, assimilation, and remobilization [41].…”