Focus Collections are an online collection of papers intended to supplement Plant Physiology® Focus Issues. Papers published in Plant Physiology® two years prior to and those published for up to two years after the Focus Issue will be included. Reactive Oxygen Species The Reactive Oxygen Species Focus Issue first appeared in June 2006. This collection […]
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Plants have evolved a variety of mechanisms to synchronize flowering with their environment to optimize reproductive success. Many species flower in spring when the photoperiod increases and the ambient temperatures become warmer. Winter annuals and biennials have evolved repression mechanisms that prevent the transition to reproductive development in the fall. These repressive processes can be […]
Plants sense changes in day length (= photoperiod) as a reliable seasonal cue to regulate important developmental transitions such as flowering. Integration of various external light information into the circadian clock-controlled mechanisms enables plants to precisely measure photoperiod changes in the surrounding environment. The core mechanism of photoperiodic measurement is regulation of CONSTANS (CO) activity, […]
Focus Issue on Cellular Dynamics (January 2018) Editors: Dan Szymanski, Diane Bassham, Teun Munnik, and Wataru Sakamoto Submission Deadline: June 5, 2017 To be published in January 2018, this focus issue will provide a series of invited Update Reviews on hot topics in plant cell biology, with broad coverage of the major plant organelles and […]
Abstract Meiosis is a specialized cell division, essential in most reproducing organisms to halve the number of chromosomes, thereby enabling the restoration of ploidy levels during fertilization. A key step of meiosis is homologous recombination, which promotes homologous pairing and generates crossovers (COs) to connect homologous chromosomes until their separation at anaphase I. These CO […]
Drought tolerance is a complex trait, and Avramova et al. show that there is more than one way to be drought tolerant. Specifically, they investigate the role of antioxidants in supporting leaf growth in several varieties of drought tolerant maize. As compared to the tolerant lines, drought sensitive varieties accumulate more reactive oxygen species, including […]
Rubisco (Ribulose-1,5-biphosphate carboxylase/oxygenase) is the key enzyme in photosynthetic carbon fixation. In C3 plants, the enzyme is usually found in mesophyll cells and guard cells, but it also can be found in photosynthetic glandular trichomes such as those found in tobacco. Laterre et al. used comparative proteomics to identify proteins specifically expressed in glandular trichomes. […]
Flowering at the right time of year is crucial for plant reproductive success, so in many plants the transition to reproductive growth is sensitive to daylength. In recent years, the daylength-responsive signal that moves from leaves to the shoot apical meristem, florigen (encoded by FLOWERING LOCUS T (FT) in Arabidopsis), has been identified, but questions […]