Improvement of Yield per se in Sugarcane

Gouy, Matthieu; Nibouche, Samuel; Hoarau, Jean-Yves; Costet, Laurent

doi:10.1002/9781118728482.ch13

Cited by 7 publications

(4 citation statements)

References 114 publications

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“…As a result of all these processes, sugarcane has an 'artificial' genome of interspecific constitution (polyploid and aneuploid), produced by human intervention, and a complexity that exceeds that of most crops (Gouy et al, 2013). Despite its redundant origin (all modern varieties have primarily the same origin) and genome complexity, including a variable number of chromosomes (2n = 110 to 130), from a meiotic point of view, several classic studies have suggested that both parental species and interspecific hybrids predominantly form bivalents at meiosis, as well as the contemporary cultivars (Bielig et al, 2003;Burner, 1991;Nair, 1975;Price, 1963aPrice, , 1963bSuzuki, 1941).…”

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confidence: 99%

Meiotic abnormalities in sugarcane (Saccharum spp.) and parental species: Evidence for peri‐ and paracentric inversions

Oliveira

Soares

Costa

et al. 2023

Annals of Applied Biology

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The modern cultivars of sugarcane (Saccharum spp.) are highly polyploid and accumulate aneuploidies due to their history of domestication, genetic improvement and interspecific hybrid origin involving the domesticated sweet species Saccharum officinarum (‘noble cane’) and the wild Saccharum spontaneum, both with an evolutionary history of polyploidy. The first hybrids were backcrossed with S. officinarum, and selection from progenies in subsequent generations established the genetic basis of modern cultivars. Saccharum genome complexity has inspired several molecular studies that have elucidated aspects of sugarcane genome constitution, architecture and cytogenetics. Herein, we conducted a comparative analysis of the meiotic behaviour of representatives of the parentals S. officinarum and S. spontaneum, and the commercial variety, SP80‐3280. S. officinarum, an octoploid species, exhibited regular meiotic behaviour. In contrast, S. spontaneum and SP80‐3280 exhibited several abnormalities from metaphase I to the end of division. We reported and typified, for the first time, the occurrence of peri‐ and paracentric inversions. Using in‐situ hybridisation techniques, we were able to determine how pairing association occurred at diakinesis, the origin of lagging chromosomes and, in particular, the mitotic chromosome composition of SP80‐3280. Interestingly, S. spontaneum and recombinant chromosomes showed the most marked tendency to produce laggards in both divisions. Future attempts to advance knowledge on sugarcane genetics and genomics should take meiotic chromosome behaviour information into account.

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confidence: 99%

Meiotic abnormalities in sugarcane (Saccharum spp.) and parental species: Evidence for peri‐ and paracentric inversions

Oliveira

Soares

Costa

et al. 2023

Annals of Applied Biology

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“…These hybrids were then successively backcrossed with S. officinarum to recover sucrose content, a process that was called “nobilization.” In the first generations, hybrid progenies have been treated with unreduced ( 2n ) gametes from S. officinarum and n gametes from S. spontaneum (Bielig et al., 2003; Bremer, 1961; Price, 1961), leading to an overrepresentation of the S. officinarum genome in the modern varieties which were released after a few generations (7, 8) following the interspecific cross. As a result, sugarcane has an “artificial” genome of interspecific constitution (polyploid and aneuploid), produced by human intervention, and with a complexity that exceeds most crops (Gouy et al., 2013). Current varieties have complex genomes and vary in chromosome number ( 2n = 110–130).…”

Section: Introductionmentioning

confidence: 99%

First investigation into the genetic control of meiosis in sugarcane

Reis Soares,

Costa,

Marques

et al. 2024

The Plant Journal

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SUMMARYThe sugarcane (Saccharum spp.) genome is one of the most complex of all. Modern varieties are highly polyploid and aneuploid as a result of hybridization between Saccharum officinarum and S. spontaneum. Little research has been done on meiotic control in polyploid species, with the exception of the wheat Ph1 locus harboring the ZIP4 gene (TaZIP4‐B2) which promotes pairing between homologous chromosomes while suppressing crossover between homeologs. In sugarcane, despite its interspecific origin, bivalent association is favored, and multivalents, if any, are resolved at the end of prophase I. Thus, our aim herein was to investigate the purported genetic control of meiosis in the parental species and in sugarcane itself. We investigated the ZIP4 gene and immunolocalized meiotic proteins, namely synaptonemal complex proteins Zyp1 and Asy1. The sugarcane ZIP4 gene is located on chromosome 2 and expressed more abundantly in flowers, a similar profile to that found for TaZIP4‐B2. ZIP4 expression is higher in S. spontaneum a neoautopolyploid, with lower expression in S. officinarum, a stable octoploid species. The sugarcane Zip4 protein contains a TPR domain, essential for scaffolding. Its 3D structure was also predicted, and it was found to be very similar to that of TaZIP4‐B2, reflecting their functional relatedness. Immunolocalization of the Asy1 and Zyp1 proteins revealed that S. officinarum completes synapsis. However, in S. spontaneum and SP80‐3280 (a modern variety), no nuclei with complete synapsis were observed. Importantly, our results have implications for sugarcane cytogenetics, genetic mapping, and genomics.

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“…As a result of all these processes, sugarcane has an 'artificial' genome of interspecific constitution (polyploid and aneuploid), produced by human intervention, and a complexity that exceeds that of most crops (Gouy et al 2013). Despite its redundant origin (all modern varieties have primarily the same origin) and genome complexity, including a variable number of chromosomes (2n = 110 to 130), from a meiotic point of view several classic studies have suggested that both parental species and interspecific hybrids predominantly form bivalents at meiosis, as well as the contemporary cultivars (Nair 1975;Price 1963aPrice , 1963bSuzuki 1941;Pagliarini et al 1990;Burner 1991;Bielig et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Meiotic abnormalities in sugarcane (Saccharum spp.): Evidence for peri- and paracentric inversions

Oliveira

Soares

Costa

et al. 2022

Preprint

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The modern cultivars of sugarcane (Saccharum spp.) are highly polyploid and accumulate aneuploidies due to their history of domestication, genetic improvement and interspecific hybrid origin involving the domesticated sweet species S. officinarum ('noble cane') and the wild S. spontaneum, both with an evolutionary history of polyploidy. The first hybrids were backcrossed with S. officinarum, and selection from progenies in subsequent generations established the genetic basis of modern cultivars. Saccharum genome complexity has inspired several molecular studies that have elucidated aspects of sugarcane genome constitution, architecture and cytogenetics. Herein, we conducted a comparative analysis of the meiotic behavior of representatives of the parentals S. officinarum and S. spontaneum, and the commercial variety, SP80-3280. S. officinarum, an octoploid species, exhibited regular meiotic behavior. In contrast, S. spontaneum and SP80-3280 exhibited several abnormalities from metaphase I to the end of division. We reported and typified, for the first time, the occurrence of peri- and paracentric inversions. Using in-situ hybridization techniques, we were able to determine how pairing association occurred at diakinesis and, in particular, the chromosome composition of SP80-3280. Our findings have implications for sugarcane genetic mapping, genomics, and for studies on resynthesized polyploids.

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Improvement of Yield per se in Sugarcane

Cited by 7 publications

References 114 publications

Meiotic abnormalities in sugarcane (Saccharum spp.) and parental species: Evidence for peri‐ and paracentric inversions

Meiotic abnormalities in sugarcane (Saccharum spp.) and parental species: Evidence for peri‐ and paracentric inversions

First investigation into the genetic control of meiosis in sugarcane

Meiotic abnormalities in sugarcane (Saccharum spp.): Evidence for peri- and paracentric inversions

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