Tag: Hormones and Growth Regulators

Among the stresses that sessile plants face, wounding is peculiar as it can be caused by both biotic and abiotic sources. While studies of wounding in animal systems have largely focused on the repair mechanisms, less is known about wound healing in plants. In an attempt to throw light on this, Hoermayer…

Responses to a changing environment require an interplay between primary and secondary messengers. Hormones like abscisic acid (ABA), auxin etc. act as a primary messengers, whereas molecules like Ca2+, reactive oxygen species (ROS), other cations and anions act as a secondary messenger. In this paper,…

Strigolactones (SL) are germination cues for parasitic plants, as their seeds will not germinate until they perceive SL exuded from the host plant.  In contrast, gibberellins (GA) are the dominant germination hormone in non-parasitic plants; GA-mediated degradation of DELLA repressors permits germination.…

Abscisic acid (ABA), is implicated in reversible inhibition of seed germination (emergence of radicle) and post-germination seedling establishment (formation of green open cotyledons) during unfavorable conditions. Yadukrishnan et al. analyzed the role of light in ABA- mediated inhibition of post germination…

Is it possible to simultaneously increase two incompatible features like grain yield and stress tolerance? Yin et al. suggest that optimizing cytokinin distribution in plant tissues is a promising strategy for that. ARGONAUTE2 (AGO2) and BIG GRAIN3 (BG3) genes work together promoting at the same time…

Adjacent cells in plants are connected by cytoplasmic connections called plasmodesmata (PD) and the movement through PD is called symplastic movement. Studies have shown that auxin transport between cells is protein-dependent, but it is not clear whether it can also move freely in the symplastic pathway.…

Abscisic acid (ABA) acts on different plant physiological and developmental processes by quite complex mechanisms. In fact, some of these processes interact with light signaling and some are controlled by alternative splicing. In this paper, Punzo et al. show that DRT111 – a splicing factor previously…

Plants balance their efforts on growth and defense depending on the situation. Competitive conditions signaled by the low ratios of red (R) to far-red (FR) light suppress defense responses mediated by the plant hormone jasmonate (JA), presumably for allocating more resources to promote plant growth.…