Effects of high temperature after pollination on physicochemical properties of waxy maize flour during grain development

Lu, Dalei; Cai, Xuemei; Yan, Fabao; Sun, Xiaolun; Wang, Xin; Lu, Wei

doi:10.1002/jsfa.6433

Cited by 23 publications

(19 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many studies reported that heat stress during grain filling increases the protein content and reduces the starch content in cereal grains 3 , 22 , 23 . In the present study, the grain starch content was increased first and decreased thereafter, similar to our previously finding 18 . The grain starch content at maturity was decreased 3.0% and 3.3% in 2014 and 2015.…”

Section: Discussionsupporting

confidence: 93%

“…The grain dry weight at maturity was decreased by 19.8% and 19.1% in 2014 and 2015, as reported early 21 . However, in our previous study, the grain weight was not affected by heat stress before 17 DAP, increased at 15–30 DAP and suppressed thereafter 18 . The discrepancy may be due to the difference in ambient temperature (27.4 °C/15.6 °C) after pollination, which was lower than that in the present study (29.0 °C/22.0 °C in 2014 and 28.2 °C/21.5 °C in 2015).…”

Section: Discussionmentioning

confidence: 60%

“…In our previous study, the waxy maize grain starch content was decreased, whereas protein content was increased, resulting in the change of grain quality 18 , 19 . However, in-depth understanding of the activities of enzymes involved in the synthesis of starch and protein is still lacking.…”

Section: Introductionmentioning

confidence: 88%

See 2 more Smart Citations

Heat stress during grain filling affects activities of enzymes involved in grain protein and starch synthesis in waxy maize

Yang

Ding

et al. 2018

Sci Rep

Self Cite

View full text Add to dashboard Cite

High temperature (temperature over 35 °C) is an extremely important environmental factor that affects the maize grain quality in Southern China. The effects of heat stress after pollination on grain protein and starch deposition and activities of involved enzymes were studied in a pot trail in 2014 and 2015. Results showed that grain dry weight reductions at maturity were 19.8% and 19.1%, whereas starch contents (mg g−1) were reduced by 3.0% and 3.3%, and starch accumulation (mg grain−1) were reduced 22.2% and 21.8% in 2014 and 2015, respectively. Protein content was decreased by heat stress before 15 DAP and increased thereafter. At maturity, protein contents (mg g−1) were increased by 24.5% and 25.3% in 2014 and 2015, while protein accumulation (mg grain−1) were not affected by heat stress. In response to heat stress, glutamate synthase activity was enhanced by 29.1–82.9% in 2014 and 2.0–141.8% in 2015, whereas glutamine synthetase activity was reduced by 1.9–43.5% in 2014 and 0.1–27.4% in 2015 throughout the grain filling. The activities of sucrose phosphate synthase were decreased by heat stress at 10–25DAP (12.7–32.0%) in 2014 and 15–20 DAP (23.2–27.5%) in 2015, and activities of sucrose synthase were decreased by heat stress at 5–15 DAP (20.0–45.0%) in 2014 and 15 DAP (22.0%) in 2015, repectively. The activities of enyzmes that involved in starch synthessis were all suppressed by heat stress during grain filling, and the reduction of adenosine diphosphate-glucose pyrophosphorylase, soluble starch synthase, and starch branching enzyme were decreased by 21.3–43.1%, 19.1–29.2%, and 7.0–45.6% in 2014 and 1.8–78.5%, 21.4–51.2%, and 11.0–48.0% in 2015, respectively. Conclusively, grain weight and starch deposition were suppressed by heat stress due to the decreased activities of enzymes involved in starch synthesis, and the increased protein content was due to the enhanced activity of glutamate synthase.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 60%

See 1 more Smart Citation

Heat stress during grain filling affects activities of enzymes involved in grain protein and starch synthesis in waxy maize

Yang

Ding

et al. 2018

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…As one of the vital environmental signals, temperature seriously influences growth and development of plant, and non-optimum temperature will have stress on plants (Farooq et al, 2011;Nawaz et al, 2013;Lu et al, 2014). With the continuous development of global warming and climatic change, high temperature stress negatively affecting plant growth and development is followed (Wahid et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Shade Ameliorates High Temperature-induced Inhibition of Growth in Herbaceous Peony (Paeonia lactiflora)

Daqiu¹,

ChengXia²,

Zhou³

et al. 2015

IJAB

View full text Add to dashboard Cite

High temperature stress has a significant impact on plant growth and development. Herbaceous peony (Paeonia lactiflora Pall.) is a very important landscape plant used in greenbelt whose growth is restrained seriously by high summer temperature, but little is known about relevant solving measures. In order to find an effective measure, this paper studied the effect of black shading net with about 60% transmittance on alleviating the thermal damage of P. lactiflora under field conditions. The results showed that P. lactiflora physiological indices were higher in shaded plants than those in sun-exposured plants especially in the late stages of higher temperature, such as chlorophyll (Chl) a, Chl b, Chl a+b, soluble sugar, soluble protein contents; whereas the exception to the trend was in Chl a/b and malondialdehyde (MDA) content. Moreover, compared with sun exposure, shade increased P. lactiflora protective enzymes activities, made mesophyll cell ultrastructures more intact, the chloroplasts more round and the grana lamellaes arrange relatively neatly, which led to enhance its photosynthesis rate (Pn) and transpiration rate (Tr). Additionally, the full-length cDNA of a heat shock protein gene (HSP70) containing 2195 bp nucleotides was obtained from P. lactiflora, and the expression analysis of PlHSP60, PlHSP70 and PlHSP90 in four developmental stages showed that shade caused PlHSP60 and PlHSP70 expression levels to rise especially in the late stages. These results indicated that shade alleviated the thermal damage of high temperature stress to P. lactiflora through scavenging reactive oxygen species, protecting cell structures, enhancing photosynthesis and the expression levels of HSP under high temperature stress, which might lay a theoretical foundation for P. lactiflora safe over summering and cultivated form in summer.

show abstract

“…and decreases grain number and seed setting rate (Lu et al, 2014;Mitchell & Petolino, 1988). Development of endosperm cells is reportedly affected by HT stress (Commuri & Jones, 1999;Engelen-Eigles, Jones, & Phillips, 2000).…”

mentioning

confidence: 99%

High temperature reduces photosynthesis in maize leaves by damaging chloroplast ultrastructure and photosystem II

Ren

et al. 2020

J Agronomy Crop Science

View full text Add to dashboard Cite

Global warming has increased the frequency and duration of high temperature (HT) stress. Photosynthesis determines yield in maize and is extremely HT sensitive. The effects of HT on photosynthesis in maize leaves have been strongly examined under controlled conditions. Here, to explore the mechanism and primary inhibitory sites of HT to photosynthesis, the HT sensitivity of photosynthesis in XY335 and ZD958 maize hybrids was systematically studied in field by multiple methods. HT decreased leaf area and photosynthetic rate of unit leaf area and hence limited growth. HT disrupted chloroplast and mitochondrial membrane structure, possibly delaying photosynthetic recovery after HT. These changes were greater in XY335 than ZD958. Stomatal conductance decreased significantly under HT, and this did not restrict CO2 fixation but may weaken the heat dissipation through transpiration. HT caused photoinhibition of PSII but not PSI. HT damaged both the oxygen‐evolving complex, located at donor side of PSII, and electron transfer from QA to QB, located at acceptor side of PSII. Interference of electron transfer from QA to QB caused by degradation of QB‐binding (D1) protein was the primary site of PSII inhibition by HT in maize leaves. The different stomatal behaviour and photoinhibition sites under HT between maize and wheat were discussed.

show abstract

Effects of high temperature after pollination on physicochemical properties of waxy maize flour during grain development

Abstract: High temperature after pollination changes the dynamics of grain filling of waxy maize, which may underlie the observed changes in its pasting and thermal properties.

Cited by 23 publications

References 28 publications

Heat stress during grain filling affects activities of enzymes involved in grain protein and starch synthesis in waxy maize

Heat stress during grain filling affects activities of enzymes involved in grain protein and starch synthesis in waxy maize

Shade Ameliorates High Temperature-induced Inhibition of Growth in Herbaceous Peony (Paeonia lactiflora)

High temperature reduces photosynthesis in maize leaves by damaging chloroplast ultrastructure and photosystem II

Contact Info

Product

Resources

About