Effects of leaf aging and light duration on photosynthetic characteristics in a cucumber canopy

Pettersen, R. I.; Torre, Sissel; Gislerød, Hans R.

doi:10.1016/j.scienta.2010.02.016

Cited by 34 publications

(18 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…P N increased fastly with PAR up to 700 to 800 μmol m -2 s -1 , but the complete saturation was not reached at 1 500 mol m -2 s -1 , as it has been observed before (Zeng et al 2012). The compensation radiation, when carbon fixation is equivalent to respiration (Taiz and Zeiger 2010), was significantly lower in 60-d-old leaves (9.5 mol m -2 s -1 ) compared to younger leaves (26, 24 and 19 mol m -2 s -1 in 15-, 30-and 45 d-old leaves), similarly as reported by Constable and Rawson (1980) and Pettersen et al (2010). Chlorophyll fluorescence was not measured in this study; however, previous works have shown decreased leaf fluorescence with leaf aging (Šesták and Šiffel 1997, Čaňová et al 2008).…”

Section: Resultssupporting

confidence: 81%

Cotton leaf gas exchange responses to irradiance and leaf aging

Echer¹,

Rosolem²

2015

Biologia plant.

View full text Add to dashboard Cite

Cotton (Gossypium hirsutum L.) net photosynthetic rate (P N ) decreased with leaf age and low irradiance, and the interaction of these factors might lead to decreased yields mainly in crops with a high plant density. Shade decreased leaf gas exchange, mainly in young leaves, which did not recover after exposure to increasing irradiance. Old leaves reached P N saturation at a lower irradiance than young leaves. Also stomatal conductance decreased with leaf age and shading. Intercellular CO 2 concentration and irradiance were inversely related. The responses of P N to irradiance decreased as leaf aged, and it did not interact with shade suggesting that self-shading is not primarily responsible for the decreased photosynthetic rate in older cotton leaves.

show abstract

Section: Resultssupporting

confidence: 81%

Cotton leaf gas exchange responses to irradiance and leaf aging

Echer¹,

Rosolem²

2015

Biologia plant.

View full text Add to dashboard Cite

show abstract

“…According to Ravin and Blom (2001), the transpiration process is a key factor for both the general life of the plant, regulating its temperature and allowing the transfer of ions and organic molecules into and inside the plant, and for the photosynthesis process. The obtained Ralph and Gademann, 2005, Pettersen et al 2010b, Trouwborst et al 2011 have found that supplementary lighting of plants significantly affects their chlorophyll content. The research performed shows that introducing an additional light source within cultivation significantly increased the content of chlorophyll in tomato leaves.…”

Section: Resultsmentioning

confidence: 97%

Effect of supplementary lighting on selected physiological parameters and yielding of tomato plants

Gajc-Wolska

Kowalczyk

Metera

et al. 2013

Folia Horticulturae

View full text Add to dashboard Cite

Light is one of the basic factors needed by plants for their development. The aim of this study was to measure the effect of supplementary lighting of tomato plants with HPS and LED lamps on the chosen physiological parameters and yielding of autumn-winter cultivation crops. Two tomato cultivars ('Komeett' F 1 and 'Starbuck' F 1 by De Ruiter Seeds) were used in this experiment. After the plants were planted, LED and HPS lamps of 100 µmol m -2 s -1 light intensity were installed. The results show that the introduction of a supplementary light source to tomato cultivation caused an increase in the intensity of photosynthesis, transpiration, stomatal conductance and chlorophyll by 57.7%, 17.1%, 39.3% and 24.4% on average, respectively. Higher values of those parameters were obtained with HPS lamps than with LED lamps. The amount of marketable crops, number of fruits and mean fruit weight were higher in both combinations in which supplementary lighting was applied, and the values of these traits were higher when the cultivation was supplementary lighted with HPS lamps than with LED lamps. Due to the overhead light configuration and continued low light output, there was no increase of efficiency when using LED lamps compared to HPS lamps despite better focusing and spectral distribution.

show abstract

“…Therefore, the use of CL has been widely studied in many species, including tomato (Ohyama et al , Velez‐Ramirez et al ), eggplant (Murage et al ), lettuce (Sysoeva et al ) and pepper (Demers and Gosselin ). However, CL has been shown to induce negative effects in several plant species, and the most visible negative effect induced by CL is chlorosis (Tibbitts et al , Pettersen et al ). Long‐term CL induces decreases in photochemical quenching (Van Gestel et al ) and in the quantum yield of linear electron flux in plant leaves (Pettersen et al , Velez‐Ramirez et al ).…”

Section: Introductionmentioning

confidence: 99%

Study of the beneficial effects of green light on lettuce grown under short‐term continuous red and blue light‐emitting diodes

Bian

Yang

et al. 2018

Physiologia Plantarum

View full text Add to dashboard Cite

Red and blue light are the most important light spectra for driving photosynthesis to produce adequate crop yield. It is also believed that green light may contribute to adaptations to growth. However, the effects of green light, which can trigger specific and necessary responses of plant growth, have been underestimated in the past. In this study, lettuce (Lactuca sativa L.) was exposed to different continuous light (CL) conditions for 48 h by a combination of red and blue light-emitting diodes (LEDs) supplemented with or without green LEDs, in an environmental-controlled growth chamber. Green light supplementation enhanced photosynthetic capacity by increasing net photosynthetic rates, maximal photochemical efficiency, electron transport for carbon fixation (J ) and chlorophyll content in plants under the CL treatment. Green light decreased malondialdehyde and H O accumulation by increasing the activities of superoxide dismutase (EC 1.15.1.1) and ascorbate peroxidase (EC 1.11.1.11) after 24 h of CL. Supplemental green light significantly increased the expression of photosynthetic genes LHCb and PsbA from 6 to 12 h, and these gene expressions were maintained at higher levels than those under other light conditions between 12 and 24 h. However, a notable downregulation of both LHCb and PsbA was observed during 24 to 48 h. These results indicate that the effects of green light on lettuce plant growth, via enhancing activity of particular components of antioxidative enzyme system and promoting of LHCb and PsbA expression to maintain higher photosynthetic capacity, alleviated a number of the negative effects caused by CL.

show abstract

Effects of leaf aging and light duration on photosynthetic characteristics in a cucumber canopy

Cited by 34 publications

References 29 publications

Cotton leaf gas exchange responses to irradiance and leaf aging

Cotton leaf gas exchange responses to irradiance and leaf aging

Effect of supplementary lighting on selected physiological parameters and yielding of tomato plants

Study of the beneficial effects of green light on lettuce grown under short‐term continuous red and blue light‐emitting diodes

Contact Info

Product

Resources

About