2021年1月20日 · The expression of phytosulfokine (PSK) peptide precursor genes, and transcripts of three subtilisin-like serine proteases, SBT1.4, SBT3.7, and SBT3.8, were found to be up-regulated in response to osmotic stress. Stress symptoms were more pronounced in sbt3.8 loss-of-function mutants and could be alleviated by PSK treatment.

The expression of phytosulfokine (PSK) peptide precursor genes, and transcripts of three subtilisin-like serine proteases, SBT1.4, SBT3.7, and SBT3.8, were found to be up-regulated in response to osmotic stress. Stress symptoms were more pronounced in sbt3.8 loss-of-function mutants and could be alleviated by PSK treatment.

2024年1月4日 · Phytosulfokines (PSKs) are a class of disulfated pentapeptides and are regarded as plant peptide hormones. PSK-α, -γ, -δ, and -ϵ are four bioactive PSKs that are reported to have roles in plant growth, development, and immunity. In this review, we summarize recent advances in PSK biosynthesis, signaling, and function.

2022年10月1日 · Cleavage sites in PMP precursors are recognized by subtilases (SBTs) in a highly specific manner. SBT-mediated processing results in the activation of PMP signals regulating stress-induced flower drop, the formation of …

发现植物硫代激酶（PSK）肽前体基因的表达以及三种枯草杆菌蛋白酶样丝氨酸蛋白酶SBT1.4，SBT3.7和SBT3.8的转录均响应渗透胁迫而上调。 sbt3.8功能丧失的突变体的应激症状得到增强，可以通过PSK治疗得到缓解。

The AtSBT3.8-phytosulfokinane (PSK) and SlPhy2-PSK substrate activity are valid examples (Stührwohldt et al., 2021; Reichardt et al., 2020). Briey, proteolytic processing of proPSKs into peptide fl hormone PSK by SBTs enhances root growth under abiotic stress, such as drought, and regulates organ abscission.

PSK is a precursor protein that must be sulfonated at both tyrosines by tyrosylprotein subfotransferase (TPST), localized in the Golgi apparatus, and further cleaved by subtilisin-like serine proteases (SBTs) in the cytoplasmic matrix.

2021年5月24日 · The disulfated pentapeptide phytosulfokine (PSK) mediates growth via leucine-rich repeat receptor-like kinases, PSKR1 and PSKR2. PSK receptors (PSKRs) are part of a response module at the plasma membrane that mediates short-term growth responses, but downstream signaling of transcriptional regulation remains unexplored.

2021年7月18日 · PSK and subtilases (SBTs), which cleave PSK precursor protein for generating the PSK pentapeptide, play a role in drought stress tolerance in Arabidopsis (Stührwohldt et al., 2021).

SBT（枯草杆菌蛋白酶样丝氨酸蛋白酶）是丝氨酸蛋白水解酶家族，在植物生长和防御中发挥着多种作用。 尽管SBT家族基因已从双子叶植物（如拟南芥）的研究中获得，但对 SBT 在单子叶植物中的潜在功能知之甚少。