Exploring the Origin and Genetic Diversity of the Giant Reed, Arundo donax in South Africa

Canavan, Kim; Paterson, Iain D.; Hill, Martin

doi:10.1017/inp.2016.5

Cited by 18 publications

(20 citation statements)

References 53 publications

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“…Herbaceous 7-61 Mutant and clone collections; leaf and shoot transcriptomic sequences; studies on genetic diversity (AFLP, RAPD, and microsatellites markers) Khudamrongsawat et al, 2004;Zegada-Lizarazu et al, 2010;Pilu et al, 2014;Barrero et al, 2015;Canavan et al, 2017;Evangelistella et al, 2017;Malone et al, 2017;Valli et al, 2017 Reed canarygrass (Phalaris arundinacea L.) Pocienë et al, 2013;Lord, 2015 Virginia mallow (Sida hermaphrodita)…”

Section: Efficiency Of Light Interceptionmentioning

confidence: 99%

Marginal Lands to Grow Novel Bio-Based Crops: A Plant Breeding Perspective

Pancaldi

Trindade

2020

Front. Plant Sci.

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The biomass demand to fuel a growing global bio-based economy is expected to tremendously increase over the next decades, and projections indicate that dedicated biomass crops will satisfy a large portion of it. The establishment of dedicated biomass crops raises huge concerns, as they can subtract land that is required for food production, undermining food security. In this context, perennial biomass crops suitable for cultivation on marginal lands (MALs) raise attraction, as they could supply biomass without competing for land with food supply. While these crops withstand marginal conditions well, their biomass yield and quality do not ensure acceptable economic returns to farmers and cost-effective biomass conversion into bio-based products, claiming genetic improvement. However, this is constrained by the lack of genetic resources for most of these crops. Here we first review the advantages of cultivating novel perennial biomass crops on MALs, highlighting management practices to enhance the environmental and economic sustainability of these agro-systems. Subsequently, we discuss the preeminent breeding targets to improve the yield and quality of the biomass obtainable from these crops, as well as the stability of biomass production under MALs conditions. These targets include crop architecture and phenology, efficiency in the use of resources, lignocellulose composition in relation to bio-based applications, and tolerance to abiotic stresses. For each target trait, we outline optimal ideotypes, discuss the available breeding resources in the context of (orphan) biomass crops, and provide meaningful examples of genetic improvement. Finally, we discuss the available tools to breed novel perennial biomass crops. These comprise conventional breeding methods (recurrent selection and hybridization), molecular techniques to dissect the genetics of complex traits, speed up selection, and perform transgenic modification (genetic mapping, QTL and GWAS analysis, marker-assisted selection, genomic selection, transformation protocols), and novel high-throughput phenotyping platforms. Furthermore, novel tools to transfer genetic knowledge from model to orphan crops (i.e., universal markers) are also conceptualized, with the belief that their development will enhance the efficiency of plant breeding in orphan biomass crops, enabling a sustainable use of MALs for biomass provision.

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Section: Efficiency Of Light Interceptionmentioning

confidence: 99%

Marginal Lands to Grow Novel Bio-Based Crops: A Plant Breeding Perspective

Pancaldi

Trindade

2020

Front. Plant Sci.

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“…Providing evidence of multiple lineages within A. donax and identifying its putative ancestral area, our findings may be helpful to researchers working on both invasiveness management (Canavan et al, ; Puértolas, Damásio, Barata, Soares, & Prat, ), phytoremediation programmes and industrial exploitation of the species (Atma, Larouci, Meddah, Benabdeli, & Sonnet, ; Corno et al, ; Lewandowski et al, ; Mirza et al, ).…”

Section: Discussionmentioning

confidence: 84%

“…From these regions, the giant reed might have been able to expand, on the one hand, towards eastern (lineages III and IV, Figure 1a–c and lineage III, Figure 1b–d) and south eastern regions (lineage VI, Figure 1a–c), on the other hand, westward (lineage I, Figure ). Only recently, giant reed spread from the Mediterranean basin to USA (Hardion et al, ; Mariani et al, ) and to Africa (Canavan, Paterson, & Hill, ) through human activity. It needs to be underlined that, because human‐mediated dispersal may have strongly influenced the distribution of current lineages, as it could be the case of the possible multiple introduction in North America and Australia (Malone et al, ; Tarin et al, ), further investigations of the processes involved in A. donax expansion are required.…”

Section: Discussionmentioning

confidence: 99%

Multiple evolutionary lineages detected in giant reed (Arundo donax L.): Applied and evolutionary perspectives

Zecca

Tommasi

Grassi

2020

Annals of Applied Biology

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Identification of independent evolutionary lineages is a modern challenge for biologists especially in crops with high potential. Molecular methods, usually used to explore intraspecific variation, also offer important information regarding how and when lineages have evolved and spread. Today, several tools to define the demarcation of lineages based on single or multi-locus data are available, permitting objective results to be obtained. We tested nuclear and plastid loci using five different approaches to delimit the major lineages and estimate the divergence times in giant reed (Arundo donax L.). It is an emerging energy crop, widespread in sub-tropical and temperate regions but particularly aggressive outside its native range. Our results support the presence of six lineages distributed from the Asian regions to the Mediterranean basin and indicate the western and southern edges of the Qinghai-Tibet Plateau as the putative area of origin and source of ancient and cryptic lineages. We suppose it could be an area that has fertile populations. These results should be considered in breeding programmes to produce new cultivars, especially because the absence of fertility for Mediterranean giant reed lineages reduces the opportunity of crop improvement. Moreover, the description of multiple lineages and identifying its putative ancestral area may be helpful to researchers working on invasiveness management, phytoremediation programmes and conservation biology.

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“…Sexual reproduction and seed dispersal is not a prerequisite for the spread of many TSGs (Ahmad et al 2008;Hardion et al 2012;Canavan et al 2017a). Clonal TSGs use stem-derived spacers such as underground rhizomes or above-ground stolons to disperse which can be further aided by anthropogenic activities such as the movement of TSGs for ornamental horticulture and other purposes (SFAPRC 2006;Isagi et al 2016).…”

Section: Competitive Features Of Tsgsmentioning

confidence: 99%

Tall-statured grasses: a useful functional group for invasion science

et al. 2018

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Species in the grass family (Poaceae) have caused some of the most damaging invasions in natural ecosystems, but plants in this family are also among the most widely used by humans. Therefore, it is important to be able to predict their likelihood of naturalisation and impact. We explore whether plant height is of particular importance in determining naturalisation success and impact in Poaceae by comparing naturalisation of tall-statured grasses (TSGs; defined as grass species that maintain a self-supporting height of 2 m or greater) to non-TSGs using the Global Naturalised Alien Flora database. We review the competitive traits of TSGs and collate risk assessments conducted on TSGs. Of the c. 11,000 grass species globally, 929 qualify (c. 8.6%) as TSGs. 80.6% of TSGs are woody bamboos, with the remaining species scattered among 21 tribes in seven subfamilies. When all grass species were analysed, TSGs and non-TSGs did not differ significantly in the probability of naturalisation. However, when we analysed woody bamboos separately from the other grasses,

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Exploring the Origin and Genetic Diversity of the Giant Reed, Arundo donax in South Africa

Cited by 18 publications

References 53 publications

Marginal Lands to Grow Novel Bio-Based Crops: A Plant Breeding Perspective

Marginal Lands to Grow Novel Bio-Based Crops: A Plant Breeding Perspective

Multiple evolutionary lineages detected in giant reed (Arundo donax L.): Applied and evolutionary perspectives

Tall-statured grasses: a useful functional group for invasion science

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