Effect of light quality on ethylene formation in leaf and petal discs of Begonia � hiemalis Fotsch cv. Schwabenland Red

Rudnicki, Ryszard; Fjeld, T.; Moe, R.

doi:10.1007/bf00024849

Cited by 11 publications

(7 citation statements)

References 19 publications

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“…Some earlier studies have also shown that plants grown under low R/FR had increased stem elongation coupled with increased ethylene evolution (Nilsen and Orcutt 1996). For instance, Rudnicki et al (1993) found that in Begonia hiemalis leaf discs exposed to far-red light (low R/FR), the concentration of ethylene nearly doubled. In contrast, Kurepin et al (2011) have shown reduced ethylene evolution coupled with increased hypocotyl length of sunflower (Helianthus annuus) grown under low R/FR.…”

Section: Effects Of Light Qualitymentioning

confidence: 99%

Single and Interactive Effects of Temperature and Light Quality on Four Canola Cultivars

Slauenwhite

Qaderi

2012

J Agronomy Crop Science

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Combined effects of temperature and light quality on plants have received little attention. We investigated the single and interactive effects of temperature and light quality on growth and physiological characteristics of four canola (Brassica napus) cultivars -Clearfield 46A76 (cv 1 ), Clearfield 45H72 (cv 2 ), Roundup Ready 45H24 (cv 3 ) and Roundup Ready 45H21 (cv 4 ). Plants were grown under lower (24°/20°C) and higher (30°/26°C) temperature regimes at low red/far-red (R/ FR), normal R/FR and high R/FR light ratios in environment-controlled growth chambers (16 h light/8 h dark). Higher temperature reduced stem height and diameter; leaf number and area; dry matter of all plant parts; and specific leaf weight, but increased leaf area ratio; and chlorophyll (Chl) fluorescence (Y). Low R/FR increased stem height; Y; and ethylene, but decreased stem diameter; F v /F m ; Chl a; Chl b; and carotenoids. Among cultivars, plants from cv 4 were tallest with thickest stems and greatest dry matter. None of the main factors affected gas exchange. Higher temperature at high R/FR caused cv 3 to be shortest, whereas lower temperature at low R/FR caused cv 4 to be tallest. We conclude that heat and other stress factors will adversely affect sensitive crops, but tolerant genotypes should perform well under future climate.

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Section: Effects Of Light Qualitymentioning

confidence: 99%

Single and Interactive Effects of Temperature and Light Quality on Four Canola Cultivars

Slauenwhite

Qaderi

2012

J Agronomy Crop Science

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“…It is generally accepted that light inhibits ethylene synthesis by reducing 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase (ACO) activity (Kao and Yang, 1982;Finlaysonet al, 1998). In leaf segments of oat (Avena sativa) and Begonia hiemalis-Fotsch, it was demonstrated that light quality also has an influence on ethylene production (Rudnicki et al, 1993;Corbineau et al, 1995).…”

mentioning

confidence: 99%

Ethylene and Auxin Control the Arabidopsis Response to Decreased Light Intensity

Vandenbussche¹,

Vriezen²,

Smalle³

et al. 2003

Plant Physiology

165

138

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Morphological responses of plants to shading have long been studied as a function of light quality, in particular the ratio of red to far red light that affects phytochrome activity. However, changes in light quantity are also expected to be important for the shading response because plants have to adapt to the reduction in overall energy input. Here, we present data on the involvement of auxin and ethylene in the response to low light intensities. Decreased light intensities coincided with increased ethylene production in Arabidopsis rosettes. This response was rapid because the plants reacted within minutes. In addition, ethylene- and auxin-insensitive mutants are impaired in their reaction to shading, which is reflected by a defect in leaf elevation and an aberrant leaf biomass allocation. On the molecular level, several auxin-inducible genes are up-regulated in wild-type Arabidopsis in response to a reduction in light intensity, including the primary auxin response gene IAA3 and a protein with similarity to AUX22 and the 1-aminocyclopropane-1-carboxylic acid synthase genes ACS6, ACS8, and ACS9 that are involved in ethylene biosynthesis. Taken together, the data show that ethylene and auxin signaling are required for the response to low light intensities.

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“…1994) increase ethylene production in some plant systems. Morever, phytochrome may modulate ACC oxidase activity (Rudnicki et al. 1993, Kathiresan et al.…”

Section: Discussionmentioning

confidence: 99%

“…Both MGBG (Minocha et al 1991, Scaramagli et al 2000 and FR-EOD treatment (Panizza et al 1994) increase ethylene production in some plant systems. Morever, phytochrome may modulate ACC oxidase activity (Rudnicki et al 1993, Kathiresan et al 1996. Further work to test ethylene evolution is necessary.…”

Section: Discussionmentioning

confidence: 99%

Effect of end‐of‐day irradiations on polyamine accumulation in petal cultures of Araujia sericifera

Moysset¹,

Trull²,

Santos³

et al. 2002

Physiologia Plantarum

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We have studied photoperiodic control and the effect of phytochrome photoconversion at the end-of-day (EOD) on polyamine (PA) accumulation in petal explants of Araujia sericifera. Petals from immature flowers were cultured under long (LD) and short (SD) days. Light was provided by Gro-lux fluorescent lamps (90-100 &mgr;mol m-2 s-1). Red (R), far red (FR), red followed by far-red (R-FR) and far-red followed by red (FR-R) light treatments were applied daily at the end of the photoperiod. The free and bound putrescine (Put), spermidine (Spd) and spermine (Spm) fractions in petal explants were determined 40 days after the beginning of the culture. We also aimed to clarify the involvement of PA changes by using two inhibitors of PA biosynthesis: D-l-alpha-difluoromethylarginine (DFMA) and methylglyoxal bis(guanylhydrazone) (MGBG). We found PA accumulation to be under photoperiodic control, and the inhibitory effect of DFMA on this accumulation suggests that arginine decarboxylase (ADC) is the major pathway for Put biosynthesis. Polyamine levels were higher under LD, mainly as a result of the accumulation of free and bound Put. FR-EOD treatment, which dramatically reduced the R : FR ratio after LD, increased the accumulation of PA, mainly as free Put and free and bound Spd. Sequential R-FR and FR-R-EOD treatments strongly increased bound Spd. The concentration of MGBG used increased total PA accumulation, mainly as Put. However, all EOD light treatments dramatically reduced Put accumulation in the presence of MGBG. This may be due to a dual role of FR light in PA accumulation: (1) FR per se stimulates PA production, probably via ADC, and (2) in the presence of MGBG, FR inhibits Put accumulation, probably via ethylene production.

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Effect of light quality on ethylene formation in leaf and petal discs of Begonia � hiemalis Fotsch cv. Schwabenland Red

Cited by 11 publications

References 19 publications

Single and Interactive Effects of Temperature and Light Quality on Four Canola Cultivars

Single and Interactive Effects of Temperature and Light Quality on Four Canola Cultivars

Ethylene and Auxin Control the Arabidopsis Response to Decreased Light Intensity

Effect of end‐of‐day irradiations on polyamine accumulation in petal cultures of Araujia sericifera

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