Elongation of Scots pine seedlings under blue light depletion is independent of etiolation

Light signaling and plant responses to blue and UV radiations—Perspectives for applications in horticulture

“…The effects of blue light on branching are also speciesdependent, with bud burst stimulation (Barnes and Bugbee, 1992;Mortensen and Strømme, 1987;Muleo et al, 2001), repression (Wilson et al, 1993), or no effect observed (Abidi et al, 2013;Sarala et al, 2007) (Table 1). In rose, blue light alone is able to induce both shoot meristem organogenic activity and leaf expansion, whereas these processes are completely inhibited in the absence of light (Girault et al, 2008).…”

Seedling ontogeny and environmental plasticity in two co‐occurring shade‐tolerant conifers and implications for environment–population interactions

“…However, recent reports suggest that multiple redundant pathways may supplement classic red:far-red wavelength responses. These include high-irradiance responses mediated by phytochrome independent of R:FR reception ( Mathews, 2006 ), reports of blue-light response in Scots pine ( Sarala et al, 2007 ), and an as-yet-unidentifi ed green-light reception pathway ( Zhang et al, 2011 ).…”

Species-specific differences in synthesis of flavonoids and phenolic acids under increasing periods of enhanced blue light

“…Bennet and Wallsgrove, 1994). On the other hand, blue light is a factor limiting growth (Taulavuori et al, 2005;Sarala et al, 2007;Sarala et al, 2011). Relatively high quanta of red light (around 660 nm), or a high red to far-red ratio, act principally in similar ways -suppressing growth and stimulating the defense system via jasmonic acid (JA) biosynthesis.…”