Photochemical changes and oxidative damage in four foxtail millet varieties following exposure to sethoxydim

Guo, Meijun; Wang, Y. G.; Dong, Shuqi; Wen, Yinyuan; Song, Xi-e; Guo, Peng

doi:10.1007/s11099-017-0734-z

Cited by 9 publications

(13 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, fluroxypyr treatment caused the increase in Y(NO), which demonstrated that the plant cannot protect itself against damage from excess illumination due to blocking the regulatory mechanism of the non-photochemical dissipation of energy. Consistent with our results, Guo et al (2018) reported that sethoxydim has similar effects on the photosynthetic pigments, photosynthetic gas exchange and chlorophyll fluorescence parameters of foxtail millet.…”

Section: Discussionsupporting

confidence: 92%

“…Numerous studies have demonstrated that excessive application of fluroxypyr in the environment inhibits plant growth (Wu et al, 2010; Guo et al, 2018). In the present study, we found that fluroxypyr had a slight effect on plant growth at relatively low doses, but exerted significant influence at high doses.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, methionine and tryptophan, which are important in preventing atherosclerosis and softening the blood vessel, are abundant in this plant. However, weed infestation has severely limited foxtail millet production in China (Guo et al, 2018). Weeds are the most important biotic factor affecting agricultural production; they are responsible for over 55.56% of total foxtail millet yield losses (Zhou et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comprehensive evaluation of fluroxypyr herbicide on physiological parameters of spring hybrid millet

Guo¹,

Shen²,

Song³

et al. 2019

PeerJ

View full text Add to dashboard Cite

Foxtail millet (Setaria italic L.) is an important food and fodder crop that is cultivated worldwide. Quantifying the effects of herbicides on foxtail millet is critical for safe herbicide application. In this study, we analyzed the effects of different fluroxypyr dosages on the growth parameters and physiological parametric of foxtail millet, that is, peroxidation characteristics, photosynthetic characteristics, and endogenous hormone production, by using multivariate statistical analysis. Indicators were screened via Fisher discriminant analysis, and the growth parameters, peroxidation characteristics, photosynthesis characteristics and endogenous hormones of foxtail millet at different fluroxypyr dosages were comprehensively evaluated by principal component analysis. On the basis of the results of principal component analysis, the cumulative contribution rate of the first two principal component factors was 93.72%. The first principal component, which explained 59.23% of total variance, was selected to represent the photosynthetic characteristics and endogenous hormones of foxtail millet. The second principal component, which explained 34.49% of total variance, represented the growth parameters of foxtail millet. According to the principal component analysis, the indexes were simplified into comprehensive index Z, and the mathematical model of comprehensive index Z was set as F = 0.592Z1 + 0.345Z2. The results showed that the comprehensive evaluation score of fluroxypyr at moderate concentrations was higher than at high concentrations. Consequently, one L (active ingredient, ai) ha−1 fluroxypyr exerted minimal effects on growth parameters, oxidase activity, photosynthetic activity, and endogenous hormones, and had highest value of comprehensive evaluation, which had efficient and safe benefits in foxtail millet field.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comprehensive evaluation of fluroxypyr herbicide on physiological parameters of spring hybrid millet

Guo¹,

Shen²,

Song³

et al. 2019

PeerJ

View full text Add to dashboard Cite

show abstract

“…After 30 min of dark adaptation, F 0 was measured. 29 Then, the maximum fluorescence yield of the dark-adapted state (F m ) was detected under a saturated pulse (4000 μmol m −2 s −1 ). Followed by 40 s of darkness, 1 s of activated light (270 μmol m −2 s −1 ), and one saturated pulse, the maximal fluorescence yield of the light-adapted state (Fm′) was detected.…”

Section: Detection Of Chlorophyll Fluorescence Parametersmentioning

confidence: 99%

Humic acid improves the physiological and photosynthetic characteristics of millet seedlings under drought stress

Shen

Guo

Wang

et al. 2020

Plant Signaling & Behavior

View full text Add to dashboard Cite

We aimed to determine whether humic acid (HA) can alleviate the injury of millet caused by drought and its potential mechanism. Millet seeds (Jingu 21 and Zhangza 10) were soaked in different concentrations of HA (0, 50, 10, 200, and 300 mg L −1 ) for 12 h. The physiological and photosynthetic characteristics of millet seedlings, including growth parameters, osmotic regulators, antioxidase activity, photosynthesis, chlorophyll fluorescence, and P700 parameters, were determined before and after drought stress. HA significantly promoted the growth of millet seedlings under drought stress. Pretreatment with 100 mg L −1 or 200 mg L −1 HA significantly increased free proline, soluble protein, and activity of the antioxidant enzyme system (superoxide dismutase, peroxidase, and catalase) in both Zhangza 10 and Jingu 21. The accumulation of reactive oxygen species (O � :2 and H 2 O 2 ) was reduced in HA treatments compared with that of the control (P < .05). Moreover, HA (100 mg L −1 ) significantly increased net photosynthetic rate, stomatal conductance, effective quantum yield of photosystem II, relative photosynthetic electron transfer rate of photosystem II, and photochemical quenching. HA also reduced intercellular CO 2 concentration and non-photochemical quenching. Furthermore, 200 mg L −1 HA significantly increased the maximum P 700 , effective quantum yield of photosystem I, and relative photosynthetic electron transfer rate of photosystem I in Zhangza 10 and decreased non-photochemical energy dissipation in Jingu 21 and Zhangza 10 under drought stress. HA promoted the growth of millet seedlings under drought stress by promoting the osmotic adjustment ability and antioxidant capacity of seedlings and increased photosynthesis.

show abstract

“…Additionally, the hybrid foxtail millet called Zhangzagu is popular because of its high resistance, yield, and nutritional value (Dong et al, 2014;Guo et al, 2016). However, foxtail millet production in China is limited by factors, including severe weed infestation (Guo et al, 2018). Weeds reduce crop yield, quality, and the market value of foxtail millet.…”

Section: Introductionmentioning

confidence: 99%

Precision orientation herbicide spraying against weeds in plastic-mulched fields of spring hybrid millet

Guo¹,

Song²,

Shen³

et al. 2019

Emir J Food Agric

View full text Add to dashboard Cite

Foxtail millet (Setaria italic [L.] P. Beauv.) is an important food and fodder crop that is cultivated worldwide. However, weeds severely inhibit the growth of spring foxtail millet, and no suitable herbicide or method is available for weed control in foxtail millet fields. Field experiments were conducted to evaluate the efficacy of various herbicides and their safety toward hybrid foxtail millet, that is, ‘Zhangzagu 10’. The present study was conducted using seven herbicides applied by precision orientation spraying between plastic mulches in a foxtail millet field. All herbicide treatments exhibited no significant difference on foxtail millet shoot and root biomass. No difference in grain yield was observed among herbicide treatments, including MCPA (2-methyl-4-chlorophenoxyacetic acid), mesotrione, acetochlor, trifluralin, and pendimethalin, at the recommended dosage in field efficacy evaluation trial. For the same herbicide, the tendency of weed control increased with the increase in herbicide concentration. Following this finding, all herbicides applied at the highest dosage controlled weeds by 92.06% compared with the other treatments utilizing lower concentration. At the same concentration level, mesotrione controlled all weed populations was the highest observed among all herbicides, followed by prometryne and MCPA. Mesotrione controlled all weeds by at least 76.85%, exhibiting the highest weed injury among the herbicides and satisfying the requirement for weed species control. Finally, comprehensive analyses showed that mesotrione at 0.8 L ha-1, yielded the highest comprehensive evaluation value in foxtail millet field. Thus, this herbicide can be a good option in controlling weeds in foxtail millet field. This new model can aid in protecting hybrid ‘Zhangzagu 10’ foxtail millet seeds or seedlings against herbicide damage and is a good option in expanding the application range of herbicide in foxtail millet.

show abstract

Photochemical changes and oxidative damage in four foxtail millet varieties following exposure to sethoxydim

Cited by 9 publications

References 39 publications

Comprehensive evaluation of fluroxypyr herbicide on physiological parameters of spring hybrid millet

Comprehensive evaluation of fluroxypyr herbicide on physiological parameters of spring hybrid millet

Humic acid improves the physiological and photosynthetic characteristics of millet seedlings under drought stress

Precision orientation herbicide spraying against weeds in plastic-mulched fields of spring hybrid millet

Contact Info

Product

Resources

About