Multiple adaptive responses of Australian native perennial legumes with pasture potential to grow in phosphorus- and moisture-limited environments

Suriyagoda, L. D. B.; Ryan, Megan H.; Renton, Michael; Lambers, Hans

doi:10.1093/aob/mcq040

Cited by 80 publications

(67 citation statements)

References 62 publications

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“…Although the vertical root distribution is relatively easily measured (Price et al 2002;Suriyagoda et al 2010), analysis of the horizontal distributions is more complicated. Using non-destructive magnetic resonance imaging (MRI), we followed the root development of Hordeum vulgare L. and Beta vulgaris L. plants over time in three dimensional space.…”

Section: What Mechanism Could Explain a Reduced Photosynthesis In Smamentioning

confidence: 99%

Pot size matters: a meta-analysis of the effects of rooting volume on plant growth

Poorter

Bühler

Dusschoten

et al. 2012

Functional Plant Biol.

641

431

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Abstract. The majority of experiments in plant biology use plants grown in some kind of container or pot. We conducted a meta-analysis on 65 studies that analysed the effect of pot size on growth and underlying variables. On average, a doubling of the pot size increased biomass production by 43%. Further analysis of pot size effects on the underlying components of growth suggests that reduced growth in smaller pots is caused mainly by a reduction in photosynthesis per unit leaf area, rather than by changes in leaf morphology or biomass allocation. The appropriate pot size will logically depend on the size of the plants growing in them. Based on various lines of evidence we suggest that an appropriate pot size is one in which the plant biomass does not exceed 1 g L -1 . In current research practice~65% of the experiments exceed that threshold. We suggest that researchers need to carefully consider the pot size in their experiments, as small pots may change experimental results and defy the purpose of the experiment.

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Section: What Mechanism Could Explain a Reduced Photosynthesis In Smamentioning

confidence: 99%

Pot size matters: a meta-analysis of the effects of rooting volume on plant growth

Poorter

Bühler

Dusschoten

et al. 2012

Functional Plant Biol.

641

431

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“…Root architecture has been associated with plant acquisition of P and moisture in soils (Ho, Rosas, Brown, & Lynch, 2005;Suriyagoda, Ryan, Renton, & Lambers, 2010). Architectural root traits have been explored in bean breeding programs to address tolerance to low soil P availability as well as drought resistance.…”

Section: Mechanisms To Cope Up With Low Levels Of Plant-available P Amentioning

confidence: 99%

“…Suriyagoda et al (2010) reported that some Australian native perennial legumes developed correspondingly high magnitudes of roots in both top and subsoils soil layers at low P levels under soil moisture deficit. A study carried out by Morino, Obrador, Cubera, and Dupraz (2005) in Mediterranean shrubs also observed that some plant species had fine root systems in different soil layers, vesting them to explore topsoil P and deep moisture.…”

Section: Mechanisms To Cope Up With Low Levels Of Plant-available P Amentioning

confidence: 99%

Development of Common Bean (Phaseolus Vulgaris L.) Production Under Low Soil Phosphorus and Drought in Sub-Saharan Africa: A Review

Namugwanya¹,

Tenywa²,

Otabbong³

et al. 2014

JSD

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Owing to its nutritional value, especially proteins, carbohydrates, vitamins and micronutrients, common bean (Phaseolus Vulgaris L.) has been recognised as a crop that could ensure food security mostly, in Sub-Saharan Africa, where its productivity is low. Its low productivity is attributed to a milliard of constraints, of which low plant-available phosphorus (P) and limited moisture in soil are among the major limiting factors. Synergistic effects of the two factors are accentuated in Sub-Saharan African region. This paper discloses the importance of the synergistic effects of plant-available P and moisture in soils on common bean production. It has been observed that studies investigating impacts of interactions of low P levels and moisture deficit conditions in soils are yet to be conducted. Identification of traits that contribute to high performance under low P availability and moisture deficit in the same genotypes remains a major research and development challenge. However, engineering new genotypes alone may not alleviate the problem of ensuring improvement of high bean yields. Root architecture and root exploration of the soil that enable the plant to access the two soil resources, traditional methods that preserve good status of organic matter in soils and moisture and soil preparation techniques are equally important. This, calls for holistic investigations that include soil plant-available P and moisture, common bean genotypes and their root systems, and agronomic measures to facilitate a comprehensive evaluation of impacts of deficiencies in soils on common bean yields. This paper explores and synthesizes existing research and development of common bean grown in soils deficient in plant-available P and moisture, aiming at designing future research to enhance common bean productivity.

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“…Opportunities exist to develop alternative forage and grain legumes adapted to specific harsh environments, for example legumes adapted to acidic and infertile soils are being screened in Australia [83]. However, because developing even a single, temperate-adapted perennial grain legume will require substantial investment, broadly adapted (multiple soils, climates and geographies) or broadly adaptable domesticates that are productive with minimal input requirements are preferred [34].…”

Section: Adaptabilitymentioning

confidence: 99%

“…Many perennial species, by virtue of their large active root systems and specialized root structures (tubers or crowns), are able to efficiently capture, respond to and/or store available water [15,109]. Some potential alternative legumes are already being evaluated specifically for that ability [78,83]. Additionally, other legumes have strategies for acquiring phosphorous (the second most limiting element to plant growth behind N) via specialized root structures (e.g., cluster roots), by releasing carboxylates into surrounding soils and through arbuscular mycorrhizal associations [110,111].…”

Section: Resource Acquisition and Retentionmentioning

confidence: 99%

Perennial Grain Legume Domestication Phase I: Criteria for Candidate Species Selection

et al. 2018

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Annual cereal and legume grain production is dependent on inorganic nitrogen (N) and other fertilizers inputs to resupply nutrients lost as harvested grain, via soil erosion/runoff, and by other natural or anthropogenic causes. Temperate-adapted perennial grain legumes, though currently non-existent, might be uniquely situated as crop plants able to provide relief from reliance on synthetic nitrogen while supplying stable yields of highly nutritious seeds in low-input agricultural ecosystems. As such, perennial grain legume breeding and domestication programs are being initiated at The Land Institute (Salina, KS, USA) and elsewhere. This review aims to facilitate the development of those programs by providing criteria for evaluating potential species and in choosing candidates most likely to be domesticated and adopted as herbaceous, perennial, temperate-adapted grain legumes. We outline specific morphological and ecophysiological traits that may influence each candidate's agronomic potential, the quality of its seeds and the ecosystem services it can provide. Finally, we suggest that perennial grain legume breeders and domesticators should consider how a candidate's reproductive biology, genome structure and availability of genetic resources will determine its ease of breeding and its domestication timeline.

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Multiple adaptive responses of Australian native perennial legumes with pasture potential to grow in phosphorus- and moisture-limited environments

Cited by 80 publications

References 62 publications

Pot size matters: a meta-analysis of the effects of rooting volume on plant growth

Pot size matters: a meta-analysis of the effects of rooting volume on plant growth

Development of Common Bean (Phaseolus Vulgaris L.) Production Under Low Soil Phosphorus and Drought in Sub-Saharan Africa: A Review

Perennial Grain Legume Domestication Phase I: Criteria for Candidate Species Selection

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