Foliar-applied methanol effects on cotton (Gossypium hirsutum L.) gas exchange and growth

Faver, K. L.; Gerik, T. J.

doi:10.1016/0378-4290(96)00024-x

Cited by 19 publications

(15 citation statements)

References 13 publications

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“…This is consistent with previous reports that higher than 3% (v/v) methanol is toxic to these cells, possibly due to high osmotic pressure [12,29,30] and fatty acids have been isolated from outside of dead cells [28,30,31]. Furthermore, even at optimal methanol concentrations, the cells may need a period of time to adapt to this carbon source, as cell growth was relatively slow initially and then increased after 10 days.…”

Section: Resultssupporting

confidence: 90%

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Effects of methanol on cell growth and lipid production from mixotrophic cultivation of Chlorella sp.

Choi

Seo

et al. 2011

Biotechnol Bioproc E

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The marine microalga Chlorella sp. was cultivated under mixotrophic conditions using methanol as an organic carbon source, which may also act to maintain the sterility of the medium for long-term outdoor cultivation. The optimal methanol concentration was determined to be 1% (v/v) for both cell growth and lipid production when supplying 5% CO 2 with 450 µE/m 2 /sec of continuous illumination. Under these conditions, the maximal cell biomass and total lipid production were 4.2 g dry wt/L and 17.5% (w/w), respectively, compared to 2.2 g dry wt/L and 12.5% (w/w) from autotrophic growth. Cell growth was inhibited at methanol concentrations above 1% (v/v) due to increased toxicity, whereas 1% methanol alone sustained 1.0 g dry wt/L and 4.8% total lipid production. We found that methanol was preferentially consumed during the initial period of cultivation, and carbon dioxide was consumed when the methanol was depleted. A 12:12 h (light:dark) cyclic illumination period produced favorable cell growth (3.6 g dry wt/L). Higher lipid production was observed with cyclic illumination than with continuous illumination (18.6% (w/w) vs 17.5% (w/w)), and better lipid production was also obtained under mixotrophic rather than autotrophic conditions. Interestingly, under mixotrophic conditions with 12:12 (h) cyclic illumination, high proportions of C 16:0 , C 18:0 , and C 18:1 were observed, which are beneficial for biodiesel production. These results strongly indicate that the carbon source is important for controlling both lipid composition and cell growth under mixotrophic conditions, and they suggest that methanol could be utilized to scale up production to an open pond type system for outdoor cultivation where light illumination changes periodically.

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Section: Resultssupporting

confidence: 90%

“…However, methanol did not affect lipid production as much as it affected biomass, as shown in Fig. 2 [30].…”

Section: Consumption Of Both Co 2 and Methanol Under Mixotrophic Condmentioning

confidence: 79%

Effects of methanol on cell growth and lipid production from mixotrophic cultivation of Chlorella sp.

Choi

Seo

et al. 2011

Biotechnol Bioproc E

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“…Some reported an increase of photosynthesis (Faver and Gerik 1996) and growth (Madhaiyan et al 2006;Ramirez et al 2006), as well as no effect on growth (Rajala et al 1998). One experiment that used gaseous methanol, at a high concentration (1% in air), focused on the effect on the photosynthetic apparatus and found an inhibition of its biochemical reactions (Loreto et al 1999).…”

Section: Introductionmentioning

confidence: 97%

Methanol as a signal triggering isoprenoid emissions and photosynthetic performance in Quercus ilex

et al. 2011

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Several volatile organic compounds (VOCs) have been reported as having a communication role between plants and also between plants and animals. We aimed to test whether methanol, a short-chain oxygenated VOC, could also have a signalling role between plants. We monitored photosynthetic performance and VOC exchange rates of Quercus ilex L. saplings before and after two different treatments: (a) clipping of some leaves to simulate an attack by herbivores and (b) fumigation with gaseous methanol for 5 h to simulate the amount of methanol a plant could receive from surrounding plants if those had been already attacked by herbivores. The clipping treatment enhanced the photosynthetic rates, the chlorophyll a to b ratio and the carotenoid to chlorophyll ratio of nonclipped leaves, suggesting an activation of plant protective metabolism. Also, a small but interesting systemic (in nonclipped leaves) increase in methanol emission rates was observed, which agrees with the possibility that methanol may act as a signalling cue. The methanol fumigation treatment induced an increase in the actual photochemical efficiency of PSII and also in the carotenoid to chlorophyll ratio. Methanol fumigation also promoted a 14% increase in the monoterpene emission rate, 1 day after the treatment, a similar response to the ones induced by other signalling VOCs. The enhanced monoterpene emissions could add to the blend of VOCs emitted after stress and be part of further signalling pathways, thus forwarding the message started by methanol. This study suggests that clipping and methanol fumigation at natural concentrations elicit significant neighbour plant physiological responses and further BVOC emissions.

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“…Under these circumstances, level of methanol did not produce a positive effect on plant height (Table 1). Numerous studies have shown that the height of a plant is reduced by shortage of usable water (Faver and Gerik, 1996). In this research, reduced plant height was also recorded under drought conditions compared with no-drought stress conditions (Table 1).…”

Section: Resultsmentioning

confidence: 65%

The effects of spraying methanol solution and drought stress on level of antioxidant enzyme activity, growth, biomass and yield of beans (<italic>Phaseolus vulgaris</italic> L.cv.COS16)

Armand

Amiri

Ismaili

2016

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An experiment was conducted to investigate the effect of methanol solution spray treatment on growth, biomass, and functional properties of bean plant under drought stress. The experiment was set up as a fully-randomized design with three replications. The first factor was four concentration levels of spray solution (Control, 10, 20, and 30%) and the spray was applied three times during the plant growth season at 10-day intervals. The second factor was three levels of drought stress; severe drought stress (25% field capacity), moderate drought stress (75% field capacity), and non-stress (100% field capacity). Test results showed that under 20% of methanol and conditions of non-stress there was significant growth of protein content of root and leaf in comparison with the control. Antioxidant enzyme activity was not affected by application of methanol solution spray but leaf antioxidant enzymes activity declined. Under non-stress and methanol concentrations of 10 and 20%, results showed a significant increase in all morphological properties compared with the control treatment. Under conditions of severe and moderate drought stress, level of methanol solution spray did not mitigate the negative effects of drought stress on the studied properties.

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Foliar-applied methanol effects on cotton (Gossypium hirsutum L.) gas exchange and growth

Cited by 19 publications

References 13 publications

Effects of methanol on cell growth and lipid production from mixotrophic cultivation of Chlorella sp.

Effects of methanol on cell growth and lipid production from mixotrophic cultivation of Chlorella sp.

Methanol as a signal triggering isoprenoid emissions and photosynthetic performance in Quercus ilex

The effects of spraying methanol solution and drought stress on level of antioxidant enzyme activity, growth, biomass and yield of beans (<italic>Phaseolus vulgaris</italic> L.cv.COS16)

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