Please use this identifier to cite or link to this item: http://223.31.159.10:8080/jspui/handle/123456789/1585
Title: Co-overexpression of SWEET sucrose transporters modulates sucrose synthesis and defence responses to enhance immunity against bacterial blight in rice
Authors: Singh, Jitender
James, Donald
Das, Shubhashis
Patel, Manish Kumar
Sutar, Rashmi Ranjan
Achary, V. Mohan Murali
Goel, Naveen
Gupta, Kapuganti Jagadis
Reddy, Malireddy K.
Jha, Gopaljee
Sonti, Ramesh V.
Foyer, Christine H.
Thakur, Jitendra K.
Tripathy, Baishnab C.
Keywords: OsSUT1
OsSWEET11a
OsSWEET14
phloem loading
Xoo
Issue Date: 2024
Publisher: John Wiley & Sons
Citation: Plant, Cell & Environment, 47(7): 2578-2596
Abstract: Enhancing carbohydrate export from source to sink tissues is considered to be a realistic approach for improving photosynthetic efficiency and crop yield. The rice sucrose transporters OsSUT1, OsSWEET11a and OsSWEET14 contribute to sucrose phloem loading and seed filling. Crucially, Xanthomonas oryzae pv. oryzae (Xoo) infection in rice enhances the expression of OsSWEET11a and OsSWEET14 genes, and causes leaf blight. Here we show that co‐overexpression of OsSUT1, OsSWEET11a and OsSWEET14 in rice reduced sucrose synthesis and transport leading to lower growth and yield but reduced susceptibility to Xoo relative to controls. The immunity‐related hypersensitive response (HR) was enhanced in the transformed lines as indicated by the increased expression of defence genes, higher salicylic acid content and presence of HR lesions on the leaves. The results suggest that the increased expression of OsSWEET11a and OsSWEET14 in rice is perceived as a pathogen (Xoo) attack that triggers HR and results in constitutive activation of plant defences that are related to the signalling pathways of pathogen starvation. These findings provide a mechanistic basis for the trade‐off between plant growth and immunity because decreased susceptibility against Xoo compromised plant growth and yield.
Description: Accepted date: 14 March 2024
URI: https://onlinelibrary.wiley.com/doi/10.1111/pce.14901
http://223.31.159.10:8080/jspui/handle/123456789/1585
ISSN: 0140-7791
1365-3040
Appears in Collections:Institutional Publications

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