Regulation, evolution, and functionality of flavonoids in cereal crops

Liu, Zehou; Liu, Yaxi; Pu, Zhien; Wang, Jirui; Zheng, Youliang; Li, Yanhong; Wei, Yuming

doi:10.1007/s10529-013-1277-4

Cited by 65 publications

(50 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chalcone-flavanone isomerase (CFI) catalyzes flavanone synthesis, resulting in flavonoid accumulation after a wide array of external stimuli (27,28). We found that expression of the CFI gene showed an 11-fold increase in faba bean roots after the addition of root exudates from maize compared with that without addition of root exudates (Fig.…”

Section: Significancementioning

confidence: 97%

Root exudates drive interspecific facilitation by enhancing nodulation and N ₂ fixation

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

315

186

View full text Add to dashboard Cite

Plant diversity in experimental systems often enhances ecosystem productivity, but the mechanisms causing this overyielding are only partly understood. Intercropping faba beans (Vicia faba L.) and maize (Zea mays L.) result in overyielding and also, enhanced nodulation by faba beans. By using permeable and impermeable root barriers in a 2-y field experiment, we show that root-root interactions between faba bean and maize significantly increase both nodulation and symbiotic N 2 fixation in intercropped faba bean. Furthermore, root exudates from maize promote faba bean nodulation, whereas root exudates from wheat and barley do not. Thus, a decline of soil nitrate concentrations caused by intercropped cereals is not the sole mechanism for maize promoting faba bean nodulation. Intercropped maize also caused a twofold increase in exudation of flavonoids (signaling compounds for rhizobia) in the systems. Roots of faba bean treated with maize root exudates exhibited an immediate 11-fold increase in the expression of chalcone-flavanone isomerase (involved in flavonoid synthesis) gene together with a significantly increased expression of genes mediating nodulation and auxin response. After 35 d, faba beans treated with maize root exudate continued to show up-regulation of key nodulation genes, such as early nodulin 93 (ENOD93), and promoted nitrogen fixation. Our results reveal a mechanism for how intercropped maize promotes nitrogen fixation of faba bean, where maize root exudates promote flavonoid synthesis in faba bean, increase nodulation, and stimulate nitrogen fixation after enhanced gene expression. These results indicate facilitative root-root interactions and provide a mechanism for a positive relationship between species diversity and ecosystem productivity.flavanoids | gene expression | intercropping | root-root interactions | signals M any ecosystems, including grasslands (1, 2), forests (3), phytoplankton communities (4), and cropping systems (5), show a positive relationship between plant diversity and ecosystem productivity. Several mechanisms have been proposed to explain this relationship. A "sampling effect" occurs, because more diverse mixtures have a higher probability of containing a species with higher productivity (6). Complementarity effects occur when species vary in resource use and niche differentiation in space or time, leading to greater resource utilization (6-9). Facilitation occurs when one species increases the growth of other species through a wide range of processes (10). Facilitative effects may be direct (e.g., by shade or protection from harsh conditions) or indirect (e.g., when one species reduces attack by pathogens or herbivores on other species) (11-13).Legume/cereal intercropping systems have been widely studied in the context of diversity and ecosystem function and commonly overyield, because dinitrogen (N 2 ) fixation by legumes increases ecosystem nitrogen (N) supply (7,8), an example of facilitation. This facilitation is important to agriculture on a large scale, because app...

show abstract

Section: Significancementioning

confidence: 97%

Root exudates drive interspecific facilitation by enhancing nodulation and N ₂ fixation

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

315

186

View full text Add to dashboard Cite

show abstract

“…Color scale shows log 2 fold change. DS, desiccation; SS, salinity; CS, cold stress known to act as antioxidants and contribute towards adaptation to environmental stresses in plants (Liu et al 2013b).…”

Section: Discussionmentioning

confidence: 99%

Genome-Scale Transcriptomic Insights into Molecular Aspects of Abiotic Stress Responses in Chickpea

2014

View full text Add to dashboard Cite

Chickpea is an important legume crop plant and various abiotic stresses are the major constraints affecting its overall productivity. For discovery of candidate genes involved in abiotic stress responses, we employed RNA sequencing for transcriptome profiling of roots and shoots of chickpea seedlings subjected to desiccation, salinity, and cold stresses. In total, we generated more than 250 million highquality reads from non-stressed and stressed tissue samples. Data analyses provided a comprehensive view of the dynamic transcriptional response of chickpea tissues to different abiotic stresses. Differential expression analysis identified a total of 11,640 chickpea transcripts showing response to at least one of the stress conditions. The reference-based transcriptome assembly was generated and at least 3,536 previously unannotated gene loci differentially expressed under abiotic stress conditions were identified. We observed extensive transcriptional reprogramming of genes involved in transcription regulation, energy metabolism, photosynthesis, hormonal responses, secondary metabolite biosynthesis and osmoprotectant metabolism under stress conditions. In addition, genes involved in post-translational modifications, RNA metabolic processes, and epigenetic regulation were also significantly highlighted. The comprehensive transcriptome analyses presented in this study revealed several potential key regulators of plant response to abiotic stresses and open avenues to carry out functional and applied genomic studies for improving abiotic stress tolerance in chickpea.

show abstract

“…Flavonoids are one of the largest nutrient families known to researchers and over 6000 compounds included in nearly all plant tissues with various compositions and concentrations in cells . Flavonoids in plants are involved in providing pigmentation for flowers, fruits and seeds to attract pollinators, seed dispersers, protection against stresses, fertility, germination of pollen, and acting as signal molecules in plant microbe interactions .…”

Section: Plant Flavonoidsmentioning

confidence: 99%

Flavonoids biosynthesis in plants and its further analysis by capillary electrophoresis

Singh

Kumar²,

Malik

2017

Electrophoresis

View full text Add to dashboard Cite

Flavonoids represent an important bioactive component in plants. Accumulation of flavonoids often occurs in plants subjected to abiotic stresses, including the adaptation of plants to the environment and in overcoming their stress conditions. This fact makes their analysis and determination an attractive field in food science since they can give interesting information on the quality and safety of foods. In this study, we discuss reports on plants flavonoids biosynthesis against abiotic stresses and advances in analytical capillary electrophoresis used for their identification and quantification in plants.

show abstract

Regulation, evolution, and functionality of flavonoids in cereal crops

Cited by 65 publications

References 116 publications

Root exudates drive interspecific facilitation by enhancing nodulation and N ₂ fixation

Root exudates drive interspecific facilitation by enhancing nodulation and N ₂ fixation

Genome-Scale Transcriptomic Insights into Molecular Aspects of Abiotic Stress Responses in Chickpea

Flavonoids biosynthesis in plants and its further analysis by capillary electrophoresis

Contact Info

Product

Resources

About

Regulation, evolution, and functionality of flavonoids in cereal crops

Cited by 65 publications

References 116 publications

Root exudates drive interspecific facilitation by enhancing nodulation and N 2 fixation

Root exudates drive interspecific facilitation by enhancing nodulation and N 2 fixation

Genome-Scale Transcriptomic Insights into Molecular Aspects of Abiotic Stress Responses in Chickpea

Flavonoids biosynthesis in plants and its further analysis by capillary electrophoresis

Contact Info

Product

Resources

About

Root exudates drive interspecific facilitation by enhancing nodulation and N ₂ fixation

Root exudates drive interspecific facilitation by enhancing nodulation and N ₂ fixation