Causes of leaf reddening in subterranean clover cultivars

Teixeira, Carmen S. P.; Lucas, Richard J.; Olykan, Sonya T.; Moot, Derrick J.

doi:10.1080/00288233.2020.1754244

Cited by 5 publications

(3 citation statements)

References 47 publications

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“…Table 1 reports the main abiotic and biotic stress conditions in which variations of the total content of anthocyanins were observed. Beyond the involvement of anthocyanins to contrast the oxidative stress conditions related to abiotic and biotic menaces, anthocyanins seem to be also able to contribute to the physiological processes during non-stress conditions, such as the elevation of leaf temperature [91,118]; transport of nutrients and monosaccharides [119][120][121]; and regulation of osmotic balance [51,105]. Table 2 reports the main plant physiological pathways in which anthocyanins are involved.…”

Section: Role In Plantsmentioning

confidence: 99%

Anthocyanins: Biosynthesis, Distribution, Ecological Role, and Use of Biostimulants to Increase Their Content in Plant Foods—A Review

et al. 2021

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In the past century, plant biostimulants have been increasingly used in agriculture as innovative and sustainable practice. Plant biostimulants have been mainly investigated as potential agents able to mitigate abiotic stress. However, few information is available about their ability to influence fruit quality or change fruit phytochemical composition. In particular, very little is known about their effects on anthocyanin synthesis and accumulation. Due to the increasing demand of consumers for healthier foods with high nutraceutical values, this review tries to fill the gap between anthocyanin content and biostimulant application. Here, we elucidate the chemical structure, biosynthetic pathway, plant distribution, and physiological role of anthocyanins in plants. Moreover, we discuss the potential implications for human health derived from the consumption of foods rich in these molecules. Finally, we report on literature data concerning the changes in anthocyanin content and profile after the application of biostimulant products on the most common anthocyanin-containing foods.

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Section: Role In Plantsmentioning

confidence: 99%

Anthocyanins: Biosynthesis, Distribution, Ecological Role, and Use of Biostimulants to Increase Their Content in Plant Foods—A Review

et al. 2021

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“…The Bayesian model comparison has been done via the deviance information criterion (DIC) (Spiegelhalter et al, 2014). The smaller DIC corresponds to a statistically better model, and a difference of at least 3 is considered statistically relevant.…”

Section: Methodsmentioning

confidence: 99%

Comparison of three different statistical approaches (non-linear least-squares regression, survival analysis and Bayesian inference) in their usefulness for estimating hydrothermal time models of seed germination

et al. 2020

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AbstractHydrothermal time (HTT) models describe the time course of seed germination for a population of seeds under specific temperature and water potential conditions. The parameters of the HTT model are usually estimated using either a linear regression, non-linear least squares estimation or a generalized linear regression model. There are problems with these approaches, including loss of information, and censoring and lack of independence in the germination data. Model estimation may require optimization, and this can have a heavy computational burden. Here, we compare non-linear regression with survival and Bayesian methods, to estimate HTT models for germination of two clover species. All three methods estimated similar HTT model parameters with similar root mean squared errors. However, the Bayesian approach allowed (1) efficient estimation of model parameters without the need for computation-intensive methods and (2) easy comparison of HTT parameters for the two clover species. HTT models that accounted for a species effect were superior to those that did not. Inspection of credibility intervals and estimated posterior distributions for the Bayesian HTT model shows that it is credible that most HTT model parameters were different for the two clover species, and these differences were consistent with known biological differences between species in their germination behaviour.

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“…There is opportunity to further exploit subterranean clover, particularly in saturated spring soil conditions, where the yannicum sub-species appears more suited than the commonly used subteraneaum (Taylor 2019). Under cold stress in New Zealand winters, some cultivars have shown leaf reddening due to anthocyanin in the leaves, but this is largely cosmetic in nature and has not affected yield (Teixeira et al . 2020 b ).…”

Section: Introductionmentioning

confidence: 99%

A review of legume research and extension in New Zealand (1990–2022)

Moot

2022

Crop & Pasture Science

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Legumes have underpinned transformational change on New Zealand sheep and beef farms over the last 30 years. This was through an emphasis on ewe nutrition based on lucerne or red clover dominant pastures, and increased use of subterranean and white clovers on uncultivatable hill country. Pre- and post-weaning lamb growth rates have increased, and enabled earlier slaughter of heavier lambs. The farm systems results include greater numbers of hoggets mated, higher lambing percentages and greater ewe efficiency (kg lamb weaned/kg ewe mated). Extension packages to support legume use have compared growth rates of resident and legume-based pastures, economic analyses of successful farms and management packages for the most appropriate legume in different environments. Over the same period, the dairy industry rapidly expanded in cow numbers and area onto flat irrigated land on the Canterbury Plains. The nitrogen deficiency of perennial ryegrass was overcome by a linear increase in nitrogen fertiliser use. Environmental concerns from this intensification has led to a legislated nitrogen cap of 190 kg/ha.year. This, coupled with a recent trebling in urea price, has returned attention to increasing the white clover content of these pastures. Nitrogen applications can be minimised by using diverse pastures sown with a legume, herb and <8 kg/ha of perennial ryegrass. Work on other legumes, including annuals and those with condensed tannins, has to date failed to increase their use in most pastoral settings, with the exception of the perennial lupin which is adapted to high-aluminium soils in the South Island High Country.

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Causes of leaf reddening in subterranean clover cultivars

Cited by 5 publications

References 47 publications

Anthocyanins: Biosynthesis, Distribution, Ecological Role, and Use of Biostimulants to Increase Their Content in Plant Foods—A Review

Anthocyanins: Biosynthesis, Distribution, Ecological Role, and Use of Biostimulants to Increase Their Content in Plant Foods—A Review

Comparison of three different statistical approaches (non-linear least-squares regression, survival analysis and Bayesian inference) in their usefulness for estimating hydrothermal time models of seed germination

A review of legume research and extension in New Zealand (1990–2022)

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