Overexpression of the Nitraria sibirica Pall. H-pyrophosphatase gene NsVP1 improves Arabidopsis salt tolerance.

Nitraria sibirica Pall., a perennial euhalophytic dwarf shrub, exhibits exceptional salt tolerance and serves as an ideal model species for saline-alkali land remediation, identification of novel salt-responsive genes, and deciphering molecular mechanisms underlying halophytic adaptation. Our previous investigations have shown that salt stress significantly upregulates both the expression and enzymatic activity of vacuolar H-pyrophosphatase (H-PPase) in this species.

Analysis of SRO gene family in Nitraria sibirica Pall. and the function of NsSRO1a in improving plant drought tolerance.

The SIMILAR TO RCD ONE (SRO) protein family is an important regulatory protein in plants and plays a key role in growth and development and adaptation to environmental stress. Nitraria sibirica Pall. grows in extreme environments and has significant stress resistance, so it is regarded as an ideal material for mining stress resistance genes.

Overexpression of PagMYB206 enhances secondary cell wall biosynthesis under low nitrogen availability in poplar.

Nitrogen (N) deficiency is a major limiting factor for the growth and productivity of perennial trees. In woody plants, secondary xylem formation is influenced by N availability, yet the molecular mechanisms underlying the wood property changes under low nitrogen (LN) conditions remain unclear. This study aimed to investigate the role of PagMYB206 in regulating secondary xylem development and acclimation to LN stress in Populus alba × Populus glandulosa.

Proteomic reprogramming underlying anatomical and physiological characteristics of poplar wood in acclimation to changing light and nitrogen availabilities.

To explore the proteomic regulation that underlies the physiological, anatomical, and chemical characteristics of wood in acclimation to changing light and nitrogen (N), saplings of Populus × canescens were treated with control or high irradiance in combination with low, control or high N for 4 months. High irradiance led to elevated levels of starch, sucrose, glucose, and fructose, decreased concentrations of ammonium, nitrate, most amino acids and total N, wider xylem, more xylem cell layers, narrower vessel lumina, longer fiber cells, greater fiber wall thickness, and more cellulose and hemicellulose but less lignin deposition in poplar wood. Limiting N resulted in increased levels of starch and sucrose, reduced levels of glucose, fructose, ammonium, nitrate, amino acids and total N, narrower xylem, fewer xylem cell layers, reduced vessel lumen diameter, thicker fiber walls, and less cellulose and more hemicellulose and lignin accumulation, whereas high N had the opposite effects on poplar wood.

The PtobZIP55-PtoMYB170 module regulates the wood anatomical and chemical properties of Populus tomentosa in acclimation to low nitrogen availability.

Poplar plantations are often established on nitrogen-poor land, and poplar growth and wood formation are constrained by low nitrogen (LN) availability. However, the molecular mechanisms by which specific genes regulate wood formation in acclimation to LN availability remain unclear. Here, we report a previously unrecognized module, basic region/leucine zipper 55 (PtobZIP55)-PtoMYB170, which regulates the wood formation of Populus tomentosa in acclimation to LN availability.

PcWRKY1 Represses Transcription of Yellow Stripe-Like 3 (PcYSL3) to Negatively Regulate Radial Cadmium Transport in Poplar Stems.

A considerable amount of cadmium (Cd) can accumulate in the bark of poplar stems, but the Cd transport pathway and its underlying molecular mechanisms remain unknown. Here, a Cd radial transport pathway in poplar stems and a previously unrecognized PcWRKY1-Yellow Stripe-Like 3 (PcYSL3) module that regulates Cd transport are identified in Populus × canescens (Aiton) Sm. Cadmiun-nicotianamine (Cd-NA) in xylem vessels in poplar stem-wood is unloaded to adjacent ray parenchyma cells and further radially transported to bark-phloem.

Homolog of Human placenta-specific gene 8, PcPLAC8-10, enhances cadmium uptake by Populus roots.

Cadmium (Cd) pollution of soil occurs worldwide. Phytoremediation is an effective approach for cleaning up Cd polluted soil. Fast growing Populus species with high Cd uptake capacities are desirable for phytoremediation.

Full-Length Transcriptome Analysis of the Halophyte Pall.

Background: Pall. is one of the pioneer tree species in saline-alkali areas due to its extreme salt tolerance. However, the lack of information on its genome limits the further exploration of the molecular mechanisms in under salt stress.