Reduced photosynthetic dark reaction triggered by ABA application increases intercellular CO2 concentration, generates H2O2 and promotes closure of stomata in ginger leaves

Li, Haidong; Wang, Yun; Xiao, Jing; Xu, Kun

doi:10.1016/j.envexpbot.2015.01.002

Cited by 29 publications

(17 citation statements)

References 42 publications

(42 reference statements)

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“…However, ETR/P net ratio was the same (data not presented) in ABA-treated plants and control indicating that thylakoid redox status adjusted in ABA-treated plants to match the carbon assimilation. Thus, alternative electron sinks such as photorespiration may not have been a major reason for the reduced carbon assimilation in ABA-treated plants as also shown by Li et al [57]. Leaf antiradical activity increased 25% under ABA 100 µM treatment compared with the control (Figure 4).…”

Section: Effects Of Aba Treatments On Physiological Variablessupporting

confidence: 55%

Photosynthesis and Kaempferol Yields of Soy Leaves Under ABA Application and Mechanical Wounding

Hh¹,

Boué²,

Dinh³

et al. 2018

J Plant Biochem Physiol

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Environmentally sound plant treatments that can impose mild physiological stress and elicit bioaccumulation of useful phytochemicals such as kaempferols are limited. We tested ABA foliar application, 100 or 200 µM, and two types of leaf wounding, piercing or hole punching in young greenhouse-grown soy plants. Leaf gas exchange and A/C i response, ΦPSII, pigments and antiradical activity were measured using the same leaf and kaempferols were measured in the leaf above. ABA 200 µM-treated plants had ≥ 20% less gas exchange and 17% less ETR, but greater V cmax and J max compared to control. They had 55% and 100% more stomatal limitation to P net and ΦPSII, respectively, than control. Leaf-wounded plants showed the lowest stomatal limitation to either P net or ΦPSII. Leaf piercing increased chlorophylls 39% and carotenoids 38% compared to control. Six kaempferols quantified were found to be mono-, di-and triglycosides. Each leaf treatment increased total kaempferol yield ranging from 42% in ABA 100 µM to 68% in ABA 200 µM treatment compared to control. In general, kaempferol yields were positively correlated to Pnet in ABA 100 µM-treated plants and to g s in ABA 200 µM-treated plants but negatively correlated to P net in leaf-pierced plants. ABA application and wounding affected the association between photosynthetic primary metabolism and kaempferol accumulation differently. Both ABA application and wounding are promising leaf treatments for eliciting kaempferol accumulation in young soy leaves.

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Section: Effects Of Aba Treatments On Physiological Variablessupporting

confidence: 55%

Photosynthesis and Kaempferol Yields of Soy Leaves Under ABA Application and Mechanical Wounding

Hh¹,

Boué²,

Dinh³

et al. 2018

J Plant Biochem Physiol

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“…These results are in agreement with those obtained by Li et al . 19 , who reported that the net photosynthesis rates decreased from 13.8 to 2.2 μmol CO 2 /m 2 /s after ABA treatment compared to the control of 13.5 μmol CO 2 /m 2 /s. In this study, the change of the net photosynthetic rate is consistent with the decrease of chlorophyll content.…”

Section: Discussionmentioning

confidence: 99%

Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application

Liu

Chen

Wang

et al. 2018

Sci Rep

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Duckweed is a valuable feedstock for bioethanol production due to its high biomass and starch accumulation. In our preliminary experiment, we found that abscisic acid (ABA) could simultaneously increase starch and biomass accumulation of duckweed, but the mechanisms are still unclear. The results showed that the biomass production of duckweed reached up to 59.70 and 63.93 g m−2 in 6 days, respectively, with an increase of 7% (P < 0.05) compared to the control. The starch percentage increased from 2.29% up to 46.18% after 14 days of treatment, with a total of starch level 2.6-fold higher than that of the control. Moreover, the level of endogenous ABA, zeatin-riboside (ZR) and indole-3-acetic acid (IAA) increased, while gibberellins (GAs) decreased. Notably, ABA content in treated samples reached 336.5 mg/kg (fresh weight), which was 7.5-fold greater than that of the control. Importantly, the enzyme activities involved in starch biosynthesis increased while those catalyzing starch degradation decreased after ABA application. Taken together, these results indicated that ABA can promote biomass and starch accumulation by regulating endogenous hormone levels and the activity of starch metabolism related key enzymes. These results will provide an operable method for high starch accumulation in duckweed for biofuels production.

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“…Wang et al [32] pointed out that under stress, the closure of rice stomata is the main reason for the reduced photosynthetic rate. In addition, Li et al [33] found that ABA-induced H 2 O 2 production is related to the closure of stomata, which is also related to that PM4 increases the content of H 2 O 2 in ginger leaves (Figure 4).…”

Section: The Effect Of Pendimethalin On the Photosynthetic E Ciency Omentioning

confidence: 90%

“…Root activity was determined by using the triphenyl tetrazolium chloride (TTC) method [22]. Relative conductivity were determined according to Li et al (2015). The α-tubulin content was determined using an αtubulin detection kit (Jianglai), the procedure was carried out in strict accordance with the manufacturer's instructions [23].…”

Section: Determination Of Physiological Indexmentioning

confidence: 99%

Toxicity and Tissue Accumulation Characteristics of the Herbicide Pendimethalin in Ginger (Zingiber Officinale Roscoe)

Lv¹,

Li²,

Liu³

et al. 2020

Preprint

Self Cite

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BackgroundEnvironmental health and food safety issues potentially caused by the dinitroaniline herbicide pendimethalin are a worldwide concern. Due to its importance for crop plants, the determination of possible toxicity and accumulation characteristics of pendimethalin in ginger should be determined. ResultsThe toxicity response of ginger and tissue accumulation effects of pendimethalin on ginger biomass were studied by utilizing pendimethalin in a dose-response study. No significant effect on ginger biomass is observed when the concentration of pendimethalin used is less than 6.7 ppm, while > 10 ppm pendimethalin significantly reduces the biomass of ginger. This is attributed to root damage. The net photosynthetic rate of ginger when treated with 16.7 ppm pendimethalin is 11.37% lower than that of the control organisms, which is mainly caused by stomatal limitation. In addition, high-dose pendimethalin (16.7 ppm) causes the accumulation of reactive oxygen species (ROS) in ginger. The activity of superoxide dismutase (SOD) and peroxidase increases accordingly, maintaining the dynamic balance of ROS content. There is no significant effect on malondialdehyde levels or on membrane permeability. Pendimethalin has no significant effect on the expression of ginger α-tubulin mRNA. The damage of high-dose (16.7 ppm) pendimethalin to ginger is mainly caused by oxidative stress. Pendimethalin is significantly accumulated in ginger roots, but not rhizomes. ConclusionsBecause of this, application of pendimethalin to treat weeds in ginger fields may not pose a threat to human health.

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Reduced photosynthetic dark reaction triggered by ABA application increases intercellular CO2 concentration, generates H2O2 and promotes closure of stomata in ginger leaves

Cited by 29 publications

References 42 publications

Photosynthesis and Kaempferol Yields of Soy Leaves Under ABA Application and Mechanical Wounding

Photosynthesis and Kaempferol Yields of Soy Leaves Under ABA Application and Mechanical Wounding

Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application

Toxicity and Tissue Accumulation Characteristics of the Herbicide Pendimethalin in Ginger (Zingiber Officinale Roscoe)

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