JOURNAL ARTICLE

Sugars and sucrose transporters in pollinia of Phalaenopsis aphrodite (Orchidaceae).

  • Published In: Journal of Experimental Botany, 2023, v. 74, n. 8. P. 2556 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Sun, Wan-Ting; Cheng, Sy-Chyi; Chao, Ya-Ting; Lin, Shu-Yao; Yang, Ting-Ting; Ho, Yi-Ping; Shih, Ming-Che; Ko, Swee-Suak 3 of 3

Abstract

This article focuses on the morphology, sugar composition, gene expression, and sucrose transporter involvement in the pollinia of Phalaenopsis orchids, particularly Phalaenopsis aphrodite. The study found that mature pollinia accumulate high levels of saccharides such as sucrose, galactinol, myo-inositol, and glucose, with minimal starch content, and identified genes related to sugar biosynthesis and 11 sucrose transporter (SUT) genes in the orchid genome. Two SUT genes (PAXXG030250 and PAXXG195390) were preferentially expressed in pollinia and upregulated during germination, which was enhanced by sucrose supplementation in vitro, promoting callose formation and pollen tube growth. These findings suggest coordinated sugar metabolism and transport are critical for pollinia development, germination, and tube growth in Phalaenopsis orchids.

Additional Information

  • Source:Journal of Experimental Botany. 2023/04, Vol. 74, Issue 8, p2556
  • Document Type:Article
  • Subject Area:Chemistry
  • Publication Date:2023
  • ISSN:0022-0957
  • DOI:10.1093/jxb/erad028
  • Accession Number:163190681
  • Copyright Statement:Copyright of Journal of Experimental Botany is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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