Summary Maintenance of root growth is essential for plant adaptation to soil drying. Here, we tested the hypothesis that auxin transport involved in mediating ABA 's modulation by activating proton secretion tip maintain under moderate water stress. Rice and Arabidopsis plants were raised a hydroponic system subjected stress (−0.47 MPa) with polyethylene glycol ( PEG ). accumulation, plasma membrane H + ‐ ATP ase activity at monitored addition primary elongation hair density. We found...

The antagonism between abscisic acid (ABA) and gibberellin (GA) plays a key role in controlling seed germination, but the mechanism of during this process is not known. possible links among ABA, reactive oxygen species (ROS), ascorbic (ASC), GA rice germination were investigated. Unlike non-seed tissues where ROS production increased by ABA reduced imbibed seeds, especially embryo region. Such also led to an inhibition ASC production. accumulation was suppressed level, which indicated...

Water scarcity constrains potato production in arid and semiarid regions. Therefore, improving water use efficiency is critical for sustainable production. We Inner Mongolia of China as a case site to examine the effects shallowly burying drip irrigation tape (SSI) on over four years by comparing it with surface (SI) terms tuber yield, productivity (WPI), root dry weight, leaf area index (LAI), matter accumulation potatoes, evapotranspiration. SSI reduced evaporation at early growth stages...

Soil alkalinity is a widespread environmental problem that limits agricultural productivity. The hypothesis an auxin-regulated proton secretion by plasma membrane H+-ATPase plays important role in root adaption to alkaline stress was studied. It found increased auxin transport and PIN2 (an efflux transporter) abundance the tip of wild-type Arabidopsis plants (WT). Compared with WT roots, pin2 mutant roots exhibited much reduced activity, elongation, transport, under stress. More importantly,...

Proanthocyanidins (PAs) are the main products of flavonoid biosynthetic pathway in seeds, but their biological function during seed germination is still unclear. We observed that delayed with increase exogenous PA concentration Arabidopsis. A similar inhibitory effect occurred peeled Brassica napus which was by measuring radicle elongation. Using abscisic acid (ABA), a and metabolic inhibitor, gene expression analysis real-time polymerase chain reaction, we found PAs on due to promotion ABA...

Abstract Alkaline stress is a common environmental stress, in particular salinized soils. Plant roots respond to variety of soil stresses by regulating their growth, but the nature regulatory pathways engaged alkaline response (ASR) not yet understood. Previous studies show that PIN-FORMED2, an auxin (indole-3-acetic acid [IAA]) efflux transporter, PKS5, protein kinase, and DNAJ HOMOLOG3 (J3), chaperone, play key roles root H+ secretion plasma membrane (PM) H+-ATPases directly or targeting...

14-3-3 proteins are a large family of but exact roles their members in plant response to abiotic stresses not clear, especially under nutrient deficiency. We investigated the expressions all tomato gene (TFT1-TFT12) low phosphorus stress (LP) and found that TFT6 belongs later responsive while TFT7 early gene. When two genes were separately introduced into Arabidopsis overexpressed, growth LP was much enhanced compared with wild-type plant. overexpressing plants showed reduced starch synthase...

HYPONASTIC LEAVES1 (HYL1) is an important regulator of microRNA (miRNA) biogenesis. Incurvature rosette leaves in loss-of-function mutants HYL1 implicates the regulation leaf flatness by via miRNA pathways. Recent studies have identified jba-1D, jaw-1D, and oe-160c, dominant MIR166g, MIR319a, MIR160c genes, respectively, which display three types curvature. However, it remains unclear whether or how controls through pathways mediated these miRNAs. To define miRNAs target genes are relevant...

The HAK/KUP/KT (High-affinity K+ transporters/K+ uptake permeases/K+ transporters) is the largest and most dominant potassium transporter family in plants, playing a crucial role various biological processes. However, our understanding of gene potato (Solanum tuberosum L.) remains limited unclear. In this study, 24 genes (StHAKs) were identified through genome-wide analysis found to be unevenly distributed across ten chromosomes. Based on phylogenetic analysis, these StHAK members classified...

In potato production, relatively low phosphorus use efficiency (PUE) leads to excessive (P) fertilizer application in many regions, resulting increasingly environmental risks. Consequently, an increasing number of researchers have started explore the ways improve PUE. The symbiosis between arbuscular mycorrhizal fungi (AMF) and crop roots enhances P uptake. However, effectiveness AMF inoculation under field conditions depends on environment agronomic managements. Inner Mongolia, China, few...

Sandy loam, characterized by inherently poor water retention capacity, necessitates the strategic utilization of fallow periods for soil conservation, with cover cropping serving as an effective ecological measure nutrient retention. This study was conducted in northern foothills Yinshan Mountains Inner Mongolia, China, where type is predominantly sandy loam. to elucidate dynamic impacts crops on profiles and their subsequent effects following cash crops. Cover were cultivated during period...

AbstractAbstractPotato tuber initiation and its growth are key processes determining yield, which closely related to stolon growth, influenced by many factors including N nutrition. We investigated the influences of different forms nitrogen (N) on in sand culture with a nitrification inhibitor during 2010 – 2011, using two potato cultivars. Plants supplied NO3-N (N as nitrate, NO3-) produced more thicker stolons than those NH4-N ammonium, NH4+) at stage. In plants fed NO3-N, tips swelled or...

Dual-specificity protein phosphatases (DsPTPs) target both tyrosine and serine/threonine residues play roles in plant growth development. We have characterized an Arabidopsis mutant, dsptp1, which shows a higher seed germination rate better root elongation under osmotic stress than the wild type. By contrast, its overexpression line, DsPTP1-OE, inhibited elongation; complemented DsPTP1-Com, resembles type rescues DsPTP1-OE stress. Expression of AtDsPTP1 is enhanced by coats, bases rosette...

Potatoes, as a high-nitrogen (N)-demand crop, are strongly influenced by both the quantity and form of N supply. Previous studies have demonstrated that applying nitrate prior to tuber formation ammonium post-tuber can substantially enhance potato yields improve fertilizer use efficiency. However, introduced into soil undergoes nitrification, creating challenges in aligning supply with needs potatoes. This study explored novel regulation strategies aimed at augmenting improving Two field...

Various mutants of Arabidopsis thaliana deficient in polarity, cell division, and auxin response are characterized by certain types leaf curvature. However, comparison curvature for clarification gene function can be difficult without a quantitative measurement Here, novel method classification quantification is reported. Twenty-two mutant alleles from transgenic lines flatness were selected. The classified according to the direction, axis, position, extent Based on global measure whole...

It has previously been shown that proanthocyanidins (PAs) in the seed coat of Arabidopsis thaliana have ability to scavenge superoxide radicals (O2−). However, physiological processess PA-deficit seeds are not clear. is hypothesized there exist alternative ways PA-deficient cope with oxidative stress. The content hydrogen peroxide (H2O2) and its relevance activities dismutase (SOD), catalase (CAT) peroxidases was investigated both wild-type mutant seeds. A biochemical staining approach used...

Appropriate water supply is crucial for high-yield and high-quality potato tuber production. However, potatoes are mainly planted in arid semi-arid regions China, where the precipitation usually cannot meet demand throughout growth period. In view of actual situation shortage these areas, to monitor status plants timely accurately thus precisely control irrigation significance water-saving management potatoes. Hyperspectral remote sensing has unique advantages diagnosing crop stress. this...

Phosphorus (P) fertilizer use efficiency in potato production is relatively low semi-arid regions, wasting P resources and increasing environmental risks. Therefore, improving (PUE) critical for sustainable production. The dilution curve (CPDC) nutrition index (PNI) have proven to be robust diagnostic tools assessing crop status aiding management. Several CPDCs been established, however, few studies conducted establish a CPDC ( Solanum tuberosum L.) under ridge planting with drip irrigation,...

Inner Mongolia ranks number one in potato (Solanum tuberosum L.) production China; however, water-use (WUE) and fertilizer-use efficiencies (FUE) are lower this region than those developed countries, even the average levels China because of poor management water fertilizer by local farmers. Fertigation has been shown to significantly improve both WUE FUE countries. The aim work was test how much fertigation could relative Mongolia. results from field experiments at different sites showed...

The objective of this study was to test if the effects different nitrogen forms on potato growth depend plant stage. Plants from cultivars were treated with before tuber initiation and after formation. A nitrification inhibitor used prevent transformation ammonium (NH4+) nitrate (NO3−). Plant growth, formation, leaf area, chlorophyll content, yield assessed. results obtained over 2 years indicate that plants NO3-nitrogen (N) or at produced more tubers per than those NH4-N. However, NH4-N...

Partial root-zone drying during irrigation (PRD) has been shown effective in enhancing plant water use efficiency (WUE), however, the roles of chemical signals from root and shoot that are involved possible interactions affected by nitrogen nutrition not clear. Pot-grown cotton (Gossypium spp.) seedlings were treated with three levels N fertilization PRD. The concentrations nitrate (NO3-), abscisic acid (ABA) pH value leaf xylem saps, biomass WUE measured. Results showed PRD plants produced...

The preference of potato plants for specific nitrogen (N) form changes with growth stage. Potato prefer nitrate N before tuber formation, while they favor ammonium after formation. However, few studies have focused on species management in production. In this study, 2-year field experiments were conducted from 2020 to 2021 Inner Mongolia, China, under drip irrigation four treatments: (1) CK (no was used), (2) conventional farming practices (F) (urea the only source applied growth), (3)...