Abstract:A key trait conferring flood tolerance is the ability to grow adventitious roots as a response to submergence. The genetic traits of deepwater rice determining the development and characteristics of aquatic adventitious roots (AAR) had not been evaluated.We used near-isogenic lines introgressed to test the hypothesis that the impressive shoot elongation ability of deepwater rice linked to quantitative trait loci 1 and 12 also promote the development of AAR.The deepwater rice genotype NIL-12 possessed expanded … Show more
“…A future challenge is to include ethylene and other underexplored gaseous components such as CO 2 as potential signals for aeration status in this equation, because their gaseous nature means it also provides a signal for aeration status. As such, ethylene already proved to be key driver of adaptive traits such as aerenchyma formation, adventitious root formation, and underwater shoot elongation (Jackson, 2008 ; Lin et al, 2023 ; Lorbiecke & Sauter, 1999 ; Sauter, 2013 ). Much work was shown on the integration and processing of the primary signals, but here many questions remain, especially regarding players such as NO, GABA, and K + homeostasis.…”
Limited aeration that is caused by tissue geometry, diffusion barriers, high elevation, or a flooding event poses major challenges to plants and is often, but not exclusively, associated with low oxygen. These processes span a broad interest in the research community ranging from whole plant and crop responses, post‐harvest physiology, plant morphology and anatomy, fermentative metabolism, plant developmental processes, oxygen sensing by ERF‐VIIs, gene expression profiles, the gaseous hormone ethylene, and O2 dynamics at cellular resolution. The International Society for Plant Anaerobiosis (ISPA) gathers researchers from all over the world contributing to understand the causes, responses, and consequences of limited aeration in plants. During the 14th ISPA meeting, major research progress was related to the evolution of O2 sensing mechanisms and the intricate network that balances low O2 signaling. Here, the work moved beyond flooding stress and emphasized novel underexplored roles of low O2 and limited aeration in altitude adaptation, fruit development and storage, and the vegetative development of growth apices. Regarding tolerance towards flooding, the meeting stressed the relevance and regulation of developmental plasticity, aerenchyma, and barrier formation to improve internal aeration. Additional newly explored flood tolerance traits concerned resource balance, senescence, and the exploration of natural genetic variation for novel tolerance loci. In this report, we summarize and synthesize the major progress and future challenges for low O2 and aeration research presented at the conference.
“…A future challenge is to include ethylene and other underexplored gaseous components such as CO 2 as potential signals for aeration status in this equation, because their gaseous nature means it also provides a signal for aeration status. As such, ethylene already proved to be key driver of adaptive traits such as aerenchyma formation, adventitious root formation, and underwater shoot elongation (Jackson, 2008 ; Lin et al, 2023 ; Lorbiecke & Sauter, 1999 ; Sauter, 2013 ). Much work was shown on the integration and processing of the primary signals, but here many questions remain, especially regarding players such as NO, GABA, and K + homeostasis.…”
Limited aeration that is caused by tissue geometry, diffusion barriers, high elevation, or a flooding event poses major challenges to plants and is often, but not exclusively, associated with low oxygen. These processes span a broad interest in the research community ranging from whole plant and crop responses, post‐harvest physiology, plant morphology and anatomy, fermentative metabolism, plant developmental processes, oxygen sensing by ERF‐VIIs, gene expression profiles, the gaseous hormone ethylene, and O2 dynamics at cellular resolution. The International Society for Plant Anaerobiosis (ISPA) gathers researchers from all over the world contributing to understand the causes, responses, and consequences of limited aeration in plants. During the 14th ISPA meeting, major research progress was related to the evolution of O2 sensing mechanisms and the intricate network that balances low O2 signaling. Here, the work moved beyond flooding stress and emphasized novel underexplored roles of low O2 and limited aeration in altitude adaptation, fruit development and storage, and the vegetative development of growth apices. Regarding tolerance towards flooding, the meeting stressed the relevance and regulation of developmental plasticity, aerenchyma, and barrier formation to improve internal aeration. Additional newly explored flood tolerance traits concerned resource balance, senescence, and the exploration of natural genetic variation for novel tolerance loci. In this report, we summarize and synthesize the major progress and future challenges for low O2 and aeration research presented at the conference.
“…In this issue of New Phytologist , Lin et al . (2023, pp. 1403–1419) characterize a specialized type of AAR that could aid wetland species such as deepwater rice in surviving prolonged and sequential flooding events.‘ Lin et al.…”
Section: Figmentioning
confidence: 99%
“…1403–1419) characterize a specialized type of AAR that could aid wetland species such as deepwater rice in surviving prolonged and sequential flooding events.‘ Lin et al. ( 2023 ) characterize a specialized type of aquatic adventitious root that could aid wetland species such as deepwater rice in surviving prolonged and sequential flooding events .’…”
Section: Figmentioning
confidence: 99%
“…‘ Lin et al. ( 2023 ) characterize a specialized type of aquatic adventitious root that could aid wetland species such as deepwater rice in surviving prolonged and sequential flooding events .’…”
Section: Figmentioning
confidence: 99%
“…Adding to their range of functions, AARs are even capable of developing photosynthesizing chloroplasts (Rich et al, 2011). In this issue of New Phytologist, Lin et al (2023Lin et al ( , pp. 1403Lin et al ( -1419 characterize a specialized type of AAR that could aid wetland species such as deepwater rice in surviving prolonged and sequential flooding events.…”
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