Upregulation of PpHsfB2b at high temperature represses light-induced anthocyanin biosynthesis in pear
Clicks: 1
ID: 318327
2026
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
0.0
/100
1 views
0 readers
AI Quality Assessment
Not analyzed
Readership in this journal
Ranked #428 of 501 articles by views in Plant physiology and biochemistry : PPB
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 501 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
Abstract In recent years, escalating global temperatures have adversely affected the yield and quality of horticultural crops. Red pears (Pyrus spp.), prized for their vibrant pigmentation, derive their characteristic coloration primarily from anthocyanin accumulation. Light and temperature are important environmental factors regulating anthocyanin biosynthesis. Light induces the accumulation of anthocyanins in red pear; however, the specific molecular mechanism by which elevated temperatures inhibit anthocyanin biosynthesis in red pear remains unclear. The integration nodes of the light and temperature signals also remain to be discovered. In this study, we identified a high-temperature-responsive repressor, pear HEAT SHOCK FACTOR B2b (PpHsfB2b), which exhibits rapid upregulation under high-temperature treatment. A stable transformation system using pear calli demonstrated that PpHsfB2b functions as a repressor of anthocyanin biosynthesis. PpHsfB2b directly bound to the promoters of anthocyanin biosynthesis-promoting factors MYB transcription factor 10 (PpMYB10) and ELONGATED HYPOCOTYL 5-LIKE (PpHY5L), inhibiting their expression. Additionally, we identified a key light-temperature signaling node gene, B-box transcription factor 16 (PpBBX16), through which PpHsfB2b exerts a dual inhibitory effect on anthocyanin biosynthesis. PpHsfB2b not only interacted with PpBBX16 to attenuate transcriptional activation of downstream genes PpMYB10 and UDP-glucose: flavonoid 3-O-glucosyltransferase (PpUFGT), but also suppressed anthocyanin accumulation by competitively weakening the PpHY5L-PpBBX16 interaction. These insights deepen our understanding of high-temperature-regulated fruit pigmentation and identify PpBBX16, a critical light-temperature signaling node, providing a molecular framework for the color change of pear fruits under increasing temperatures.
| Reference Key |
openalex_W7165614602
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | X Wang, Lu Wang, Yuting Zheng, Hui Li, Junbei Ni, Yuanwen Teng, Songling Bai |
| Journal | Plant physiology and biochemistry : PPB |
| Year | 2026 |
| DOI |
10.1093/plphys/kiag424
|
| URL | |
| Keywords | Keywords not found |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.