
Long-Days Enhance Jasmonic Acid-Related Plant Defense
Blog, Plant Physiology, Plant Physiology: News and Views, Plant Physiology: On The InsideDepending on the species, daylength profoundly affects the timing of key developmental transitions in plants, including, floral initiation, tuberization, and bud set and growth cessation in trees. To explore additional effects of daylength on plant function, Cagnola et al. (10.1104/pp.18.00443) investigated…

Diterpenoid Metabolism in Switchgrass
Blog, Plant Physiology, Plant Physiology: On The InsideSwitchgrass (Panicum virgatum) is a perennial C4 grass native to North America primarily valued as a next-generation feedstock for biofuel production. Its high net energy yield and
wide habitat range make switchgrass an attractive crop for cultivation on marginal lands with minimal agronomic inputs,…

NO2 Enhances Pathogen Resistance
Blog, Plant Physiology, Plant Physiology: On The InsideNitrogen dioxide (NO2) forms in plants under stress conditions, but little is known about its
physiological functions. Using a variety of techniques, Mayer et al. (10.1104/pp.18.00704) have examined the effects of fumigating Arabidopsis with 10 ppm NO2 for 1 h, a treatment that does not cause
visible…

Annexins Facilitate Post-Phloem Sugar Transport
Blog, Plant Physiology, Plant Physiology: On The InsideBecause local sugar concentrations play a critical role in regulating root growth, it is important to learn more about the mechanisms that control sugar transport into the growing zones of the
root. It has previously been proposed that once translocated sugar reaches the interface between conducting…

Predominant Golgi-residency of the plant K/HDEL receptor is essential for its function in mediating ER retention (Plant Cell)
Plant Science Research WeeklyCells use a sophisticated sorting system to ensure that proteins get to the proper destination. Proteins that are supposed to stay in the ER carry special tags (KDEL or HDEL, recognized by the ERD2 receptor) that prevent them from being swept along with other proteins out of the ER and into the Golgi.…

Natural variation in OsLG3 increases drought tolerance in rice (Plant Physiol)
Plant Science Research WeeklyThrough a GWAS study, Yu, Xiong et al. previously identified a transcription-factor encoding gene, OsLG3, with alleles that contribute to increased grain length in rice. In this new work, Xiong, Yu et al. showed that the same alleles of OsLG3 that confers longer grain length also enhance drought tolerance.…

Footprints of parasitism in the genome of the parasitic flowering plant Cuscuta campestris (Nature Comms)
Plant Science Research WeeklyEven without knowing a lot about parasitic plants, you can probably guess some of the insights that come from the first parasitic plant genomic sequence. Because parasitic plants get their nutrients from another organism (functionally, they become heterotrophic), you might expect they would gradually…

Genome assemblies of maize lines Mo17 and W22: Extensive intraspecific variation, and resource for functional biology (Nature Genetics)
Plant Science Research WeeklyThe maize genome is largely composed of transposable elements, which is one reason maize has been such a powerful genetic model. However, these transposons also mean that there is a great deal of genetic variability between inbred lines, which can contribute to heterosis (hybrid vigor). In a pair of…

Genome-scale sequence disruption following biolistic transformation in rice and maize (bioRxiv)
Plant Science Research WeeklyThe two classic approaches to introducing DNA into a plant’s genome are by harnessing Agrobacterium tumefaciens’ fascinating gene-transfer skill, or by shooting the new DNA into the cell using a “biolistic” (gun) approach. Because of Agrobacterium’s restricted choice of hosts, the biolistic…
