loading page

Below-ground plant-soil interactions affecting adaptations of rice to iron toxicity
  • +2
  • Guy Kirk,
  • Hanna Manwaring,
  • Yoshiaki Ueda,
  • Vimal Semwal,
  • Matthias Wissuwa
Guy Kirk
Cranfield University

Corresponding Author:g.kirk@cranfield.ac.uk

Author Profile
Hanna Manwaring
Cranfield University
Author Profile
Yoshiaki Ueda
Japan International Research Center for Agricultural Sciences
Author Profile
Vimal Semwal
AfricaRice Nigeria Station
Author Profile
Matthias Wissuwa
Japan International Research Center for Agricultural Sciences
Author Profile


Iron toxicity is a major constraint to rice production, particularly in highly-weathered soils of inland valleys in sub-Saharan Africa where the rice area is rapidly expanding. Although there is wide variation in tolerance in the rice germplasm, progress in introgressing tolerance traits into high-yielding germplasm has been slow owing to the complexity of tolerance mechanisms and large genotype by environment effects. We review current understanding of tolerance mechanisms, particularly those involving below-ground plant-soil interactions, which to date have been less studied than above-ground mechanisms. We cover processes in the rhizosphere linked to exclusion of toxic ferrous iron by oxidation, and resulting effects on the mobility of nutrient ions. We also cover the molecular physiology of below-ground processes controlling Fe retention in roots and root-shoot transport, and also plant Fe sensing. We conclude that future breeding programs should be based on well-characterised molecular markers for tolerance traits. To successfully identify such markers, the complex tolerance response should be broken down into its components based on understanding of tolerance mechanisms, and tailored screening methods developed for individual mechanisms.
10 Jun 2021Submitted to Plant, Cell & Environment
11 Jun 2021Submission Checks Completed
11 Jun 2021Assigned to Editor
11 Jun 2021Reviewer(s) Assigned
21 Jun 2021Review(s) Completed, Editorial Evaluation Pending
20 Jul 2021Editorial Decision: Revise Minor
28 Jul 20211st Revision Received
29 Jul 2021Submission Checks Completed
29 Jul 2021Assigned to Editor
31 Jul 2021Review(s) Completed, Editorial Evaluation Pending
06 Aug 2021Editorial Decision: Revise Minor
10 Aug 20212nd Revision Received
11 Aug 2021Submission Checks Completed
11 Aug 2021Assigned to Editor
13 Aug 2021Review(s) Completed, Editorial Evaluation Pending
13 Aug 2021Editorial Decision: Accept
Mar 2022Published in Plant, Cell & Environment volume 45 issue 3 on pages 705-718. 10.1111/pce.14199