Abstract
AbstractHeat waves, now more frequent and longer due to climate change, devastate plant productivity. Although rare, thermophilic plants could hold keys to engineering heat resilience in crop plants.Tidestromia oblongifoliais a thermophilic flowering plant that thrives at temperatures above 45°C. When exposed to Death Valley summer conditions,T. oblongifoliaincreased its thermal optimum of photosynthesis within a day and accelerated growth within 10 days. The physiological changes were accompanied by morphological, anatomical, and gene expression changes revealed by a newly sequenced genome. In bundle sheath cells where Rubisco fixes CO2, mitochondria relocated to chloroplasts and novel, cup-shaped chloroplasts appeared. Understanding how this plant acclimates under heat may afford new ways of engineering heat tolerance in crop plants.One-Sentence SummaryTidestromia oblongifolia’s acclimation to Death Valley is accompanied by changes in gene expression, organellar dynamics, and photosynthesis.
Publisher
Cold Spring Harbor Laboratory
Reference141 articles.
1. Masson-Delmotte V , Zhai P , Pirani A , Connors SL , Péan C , Berger S , Caud N , Chen Y , Goldfarb L , Gomis MI , Huang M , Leitzell K , Lonnoy E , Matthews JBR , Maycock TK , Waterfield T , Yelekçi O , Yu R , Zhou B, IPCC , 2021: Climate change 2021: The physical science basis. Contribution of working group I to the sixth assessment report of the intergovernmental panel on climate change. Cambridge University Press (2021).
2. Heat waves, climate change, and economic output;J. Eur. Econ. Assoc,2021
3. Climate impacts on global agriculture emerge earlier in new generation of climate and crop models;Nature Food,2021
4. Global patterns in the vulnerability of ecosystems to vegetation shifts due to climate change;Glob. Ecol. Biogeogr,2010
5. Natural selection on the Arabidopsis thaliana genome in present and future climates