Mechanisms of phloem unloading and post-phloem transport of photoassimilates during the rapid elongation of young Dendrocalamus brandisii shoots

Clicks: 15
ID: 328845
2026
Free PDF
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.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #550 of 653 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 653 in total.

Mint this article as an NFT
Not yet minted

Create 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
Sign in to mint
Abstract
Abstract Phloem unloading plays a key role in the transport and allocation of photoassimilates. Elucidating the unloading process and metabolic dynamics of photoassimilates in rapidly elongating internodes is crucial for understanding the rapid growth mechanism of bamboo. We systematically investigated the phloem unloading and the post-unloading transport mechanism in internodes of young Dendrocalamus brandisii culms through integrated anatomical observations, transcriptomic analysis, and gene functional verification. Phloem unloading shifts from coexisting apoplasmic and symplasmic pathways in immature internodes to an exclusively symplasmic mechanism in mature internodes. DbSWEET1a and DbPMT1 were highly expressed in rapidly elongating internodes. Exogenous sucrose application further confirmed their role as key genes by upregulating genes involved in apoplasmic phloem unloading and post-unloading transport in immature internodes. Plasma membrane proteins DbSWEET1a and DbPMT1 mainly localized in phloem companion cells and adjacent parenchyma cells. Yeast complementation assays verified that DbSWEET1a transports sucrose and fructose, while DbPMT1 transports glucose and fructose. SWEET1a and PMT1 proteins participate in apoplasmic phloem unloading and transport in immature internodes, whereas in mature internodes, they facilitate the retrieval of apoplasmic sugars for reintegration into the symplasmic unloading pathway.
Reference Key
openalex_W7213406963 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Fangwei Zhu, Chongsheng Zhao, Yufang Wu, Jiaxin Liu, Lixia Yu, Hui Zhan, Huijin Fan, Lingfeng Li, Shuyan Lin, Shuguang Wang
Are you one of these authors? Claim your profile
Journal Plant physiology and biochemistry : PPB
Year 2026
DOI
10.1093/plphys/kiag687
URL
https://doi.org/10.1093/plphys/kiag687
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.