Introducing selective agrochemical manipulation of gibberellin metabolism into a cereal crop

Zhang, Juan; Zhang, Yushi; Xing, Jiapeng; Yu, Haiyue; Zhang, Rui; Chen, Yiyao; Zhang, Delin; Yin, Ping; Tian, Xiaoli; Wang, Qiang; Duan, Liusheng; Zhang, Mingcai; Peters, Reuben J.; Li, Zhaohu

doi:10.1038/s41477-019-0582-x

Cited by 18 publications

(8 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unlimited growth of plant height and branch length is certainly a major limiting factor for planting density in cotton fields (Su et al ., 1993). Currently, the quaternary ammonium‐containing compound mepiquat chloride (1,1‐dimethyl‐piperidinium chloride (DPC), which inhibits plant height and branch length, has been widely used to control plant architecture in agriculture practice (Zhang et al ., 2020). However, this management program has raised two nontrivial challenges: rising labor costs and potential harm to farmland eco‐environment by accumulation of residues (Ji et al ., 2018).…”

Section: Introductionmentioning

confidence: 99%

A copy number variant at the HPDA‐D12 locus confers compact plant architecture in cotton

Liang

Cai

et al. 2020

New Phytologist

Self Cite

View full text Add to dashboard Cite

Improving yield is a primary mission for cotton (Gossypium hirsutum) breeders; development of cultivars with suitable architecture for high planting density (HPDA) can increase yield per unit area. We characterized a natural cotton mutant, AiSheng98 (AS98), which exhibits shorter height, shorter branch length, and more acute branch angle than wild-type. A copy number variant at the HPDA locus on Chromosome D12 (HPDA-D12), encoding a dehydration-responsive element-binding (DREB) transcription factor, GhDREB1B, strongly affects plant architecture in the AS98 mutant. We found an association between a tandem duplication of a c. 13.5 kb segment in HPDA-D12 and elevated GhDREB1B expression resulting in the AS98 mutant phenotype. GhDREB1B overexpression confers a significant decrease in plant height and branch length, and reduced branch angle. Our results suggest that fine-tuning GhDREB1B expression may be a viable engineering strategy for modification of plant architecture favorable to high planting density in cotton.

show abstract

Section: Introductionmentioning

confidence: 99%

A copy number variant at the HPDA‐D12 locus confers compact plant architecture in cotton

Liang

Cai

et al. 2020

New Phytologist

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although MC facilitated cotton fruit development, the underlying physiological mechanism remains unclear; however, He et al (1990) reported that MC could increase the release of ethylene in the later stage of boll development, thereby promoting boll opening. We hypothesize that MC may enhance cotton fruit development by reducing the biosynthesis of gibberellins (Zhang et al, 2020) and altering phytohormone crosstalk, but this is subject to confirmation by future research.…”

Section: Crop Sciencementioning

confidence: 90%

Multiple applications of mepiquat chloride enhanced development of plant‐wide fruits from square initiation to boll opening in cotton

Liao

Ren

et al. 2021

Crop Science

Self Cite

View full text Add to dashboard Cite

Mepiquat chloride (MC) has been widely used for the field management of cotton (Gossypium hirsutum L.) and could enhance yield and quality. However, it is not completely clear how MC influences cotton development. A field study was conducted during 2011∼2012 cotton growing seasons to determine the effects of multiple MC applications (from the late seedling stage to near cutout) on the development of each fruit by calendar days and thermal time. Two cotton cultivars (GX3 and XK4) were used for the study. The MC application significantly hastened the appearance of squares across fruiting positions by 0.4-2.9 d in 2011; and those on upper (from the 11th) fruiting branches and on inner (first two) fruiting nodes of middle (5th-10th) fruiting branches under MC treatment formed 1.8-3.8 d earlier in 2012 compared with control. Also, MC decreased the duration from squaring to flowering by 0.1-0.3 d, and that from bloom to boll opening by 0.9-2.1 d. The MC application reduced the growing degree days (GDD) of most fruiting positions from planting to squaring owing to the early onset of squares. However, it increased the GDD of cotton bolls on the upper fruiting branches during maturation period, presumably due to their early set which exposed them to the higher temperatures during development. These results have improved our understanding of MC-induced earliness in cotton and could help growers to optimize earliness management. INTRODUCTIONCotton (Gossypium hirsutum L.) is an inherently indeterminate crop; its vegetative and reproductive growth continues simultaneously over a lengthy period (Chen & Dong, 2016). Cotton growth and maturity are highly dependent on the environmental condition and field management (Schaefer et al., 2017;Zhao & Oosterhuis, 2000). Late maturity was often observed during abnormal climate conditions which adversely affected cotton yield and sowing of subsequent crops (Du Abbreviations: GDD, growing degree days; MC, mepiquat chloride.

show abstract

“…Mepiquat chloride (1,1-dimethylpiperidium chloride; DPC) is a synthetic plant hormone that is widely used as a growth retardant in cotton [ 15 – 18 ]. DPC inhibits gibberellin synthesis in plants and can control cotton vegetative growth [ 19 , 20 ], reduce boll shedding, and promote boll development and root growth in cotton [ 10 , 21 , 22 ]. DPC has also been shown to improve cell membrane stability and stress tolerance in plants [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

The effects of mepiquat chloride (DPC) on the soluble protein content and the activities of protective enzymes in cotton in response to aphid feeding and on the activities of detoxifying enzymes in aphids

2022

View full text Add to dashboard Cite

Background Mepiquat chloride (DPC) enhances the resistance of cotton plants, and it is widely used as a growth regulator. DPC can stimulate photosynthesis, stabilize the structure of cotton leaves, and affect population reproduction and energy substances in Aphis gossypii Glover (cotton aphids), but interactions between DPC and cotton aphids remain unclear. In this study, we analyzed the physiological responses of cotton to DPC, and the toxicity of DPC toward cotton aphids, before and after feeding, to explore the DPC-induced defense mechanism against cotton aphids. Results Measurements of protective enzyme activity in cotton showed that the soluble protein contents, peroxidase (POD) activity, and catalase (CAT) activity in cotton treated with different concentrations of DPC were higher than in the control. Superoxide dismutase (SOD) activity was higher than that of the control when the concentration of DPC was < 0.1 g/L. Under aphid feeding stress, POD activity in cotton treated with a low insect population density was significantly lower than in the controls, but the reverse was true for cotton treated with a high insect population density, and SOD activity was positively correlated with population density. The activities of detoxification enzymes in field and laboratory experiments showed that DPC promoted the specific activity of glutathione S-transferase (GST) in cotton aphids, while the specific activities of carboxylesterase (CarE) and acetylcholinesterase (AchE) were decreased. Conclusions DPC enhanced the aphid resistance in cotton by increasing the soluble protein content and the activity of protective enzymes. It also had a toxic effect on cotton aphids by increasing GST activity (the main DPC target). DPC increased the soluble protein content and protective enzymes activity in cotton under aphid stress, and thereby enhanced tolerance to cotton aphids. It conclude that DPC interferes with cotton aphids through indirect (DPC induced cotton defense responses) and direct (DPC toxicity to cotton aphids) ways, which plays a positive role in interfering with cotton aphids.

show abstract

Introducing selective agrochemical manipulation of gibberellin metabolism into a cereal crop

Cited by 18 publications

References 29 publications

A copy number variant at the HPDA‐D12 locus confers compact plant architecture in cotton

A copy number variant at the HPDA‐D12 locus confers compact plant architecture in cotton

Multiple applications of mepiquat chloride enhanced development of plant‐wide fruits from square initiation to boll opening in cotton

The effects of mepiquat chloride (DPC) on the soluble protein content and the activities of protective enzymes in cotton in response to aphid feeding and on the activities of detoxifying enzymes in aphids

Contact Info

Product

Resources

About