Durum wheat genome highlights past domestication signatures and future improvement targets (Nature Genetics)
Plant Science Research WeeklyDurum wheat cultivar Svevo (Triticum turgidum L. ssp. durum) is a cereal crop predominantly grown for pasta production. It is the result of multiple rounds of domestication, originally deriving from wild emmer wheat from the Fertile Crescent approximately 10,000 years ago. Here, Maccaferri et al. report…
Shared expression of crassulacean acid metabolism (CAM) genes pre-dates the origin of CAM in the genus Yucca (J Exp Bot)
Plant Science Research WeeklyCrassulacean acid metabolism (CAM) is a carbon fixation pathway that reduces photorespiration and increases water use efficiency, enabling CAM plants to survive in inhospitable environments. The evolution of CAM on 35 independent occasions across angiosperms makes it a notable case study of convergent…
Land plants recruited an ancestral bHLH for tip-growing surface cell development ($) (New Phytol)
Plant Science Research WeeklyLand plants (embryophytes) evolved from freshwater charophycean algae over 450 million years ago. The transition from aquatic to terrestrial environments likely required the evolution and expansion of genetic programs controlling three dimensional growth and the formation of tip-growing surface cells…
Review. Chemical convergence between plants and insects: biosynthetic origins and functions of common secondary metabolites (New Phytol)
Plant Science Research Weekly
Plants and insects aren't closely related, but they have a plethora of similar chemical weapons used for their interactions (defense, attraction, etc.). Beran et al. describe the function and biosynthesis of secondary metabolites that are shared in both insects and plants.
The monoterpenes and…
Review: Jasmonate signalling in carnivorous plants: Copycat of plant defence mechanisms (J Exp Bot)
Plant Science Research WeeklyCarnivorous plants are one of the easiest ways to demonstrate to children that “plants are cool too”. In their new review, Pavlovič and Mithöfer show that carnivorous plants can also be a gateway to introduce the subject of how plants defend themselves against herbivory, by drawing links between…
Molecular digitization of 689 vascular plant species from the Ruili Botanical Garden (Giga Science)
Plant Science Research WeeklyRecent advances in genome sequencing have increased our understanding of plant evolution and provided insights into factors affecting agriculturally important traits (e.g., yield, stress tolerance). There is an impetus to increase the quantity and quality of genomes publically available with around 350…
Pollinators and herbivores boost the evolution of floral traits ($) Science
Plant Science Research WeeklyThe characteristics of flowers, including morphology, color, nectar and fragrance, are closely related to their pollination methods. To attract pollinators, plants often produce large, colorful, or fragrant flowers. Increasing evidence has indicated that herbivorous feeding activity also affects flower…
Transposable elements drive rapid phenotypic variation in Capsella rubella (PNAS)
Plant Science Research WeeklyHow can a species with limited genetic variation rapidly adapt to new environments? This phenomenon is known as the genetic paradox of invasion. Here, Niu et al. studied the role of Transposable Elements (TEs) in Capsella rubella, focusing on flowering-time variation. By analyzing population genomics…
Dramatic changes in repeat element content and gene family sizes underlie the high-altitude adaptation of rock-cress (PNAS)
Plant Science Research WeeklyThe ability to grow on the ‘roof of the world’ - the Qinghai-Tibet Plateau, makes Crucihimalaya himalaica (Rock-cress) an important model for studying adaptive evolution. A draft genome sequence of C. himalaica reported by Zhang et al. now provides clues to its speciation and ecological adaptation.…