Polyploidy as a strategy to improve the industrial quality of eucalypt wood

Souza, Tadeu Vilela de; Daolio, Marcela Faralhi; Mori, Fábio Akira; Ramalho, Magno Antônio Patto; Mingossi, Fabiana Bombonato; Missiaggia, A. A.; Techio, Vânia Helena

doi:10.1007/s00226-020-01236-8

Cited by 5 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tetraploid F. carica clones showed higher tolerance to water stress by maintaining relative water content while producing high levels of stress hormones, enhancing the enzymatic defense system, and adjusting osmotic pressure [60]. Polyploid eucalyptus hybrids are larger in size, have more fibers, and have thicker walls compared to diploid relatives [61]. It is also possible that tetraploid M. volkensii plants possess higher quantities of medicinal and biopesticides chemicals than diploid plants.…”

Section: Discussionmentioning

confidence: 99%

Production of Tetraploid Plants from Cotyledons of Diploid Melia volkensii Gürke

et al. 2023

View full text Add to dashboard Cite

Polyploidy was induced in Melia volkensii (Mukau), a valuable native tree from the semi-arid regions of East Africa. Cotyledons of diploid M. volkensii (2n = 2x = 28) were treated with oryzalin for 0 (control), 1, 2, or 3 h with or without pretreatment with 1.1 µM thidiazuron. Cotyledons treated with 10 mg·L−1 oryzalin for three hours yielded 40% tetraploids. Pretreatment of cotyledons with thidiazuron for 18 days followed by treatment with oryzalin increased tetraploid plant production to 52.5%, but this also yielded more mixoploids. Compared to diploid M. volkensii, the tetraploid in vitro and young potted plants were compacter, with thicker stems, wider leaves, and a low density of longer and wider stomata. In the coming years, tetraploid M. volkensii plants will be observed in field trials and serve as a basis for further breeding efforts.

show abstract

Section: Discussionmentioning

confidence: 99%

Production of Tetraploid Plants from Cotyledons of Diploid Melia volkensii Gürke

et al. 2023

View full text Add to dashboard Cite

show abstract

“…One of the goals of chromosome duplication is to obtain larger cells and, consequently, higher yields. Polyploid plants can also improve the quality of eucalyptus wood, enhancing its suitability for pulp and paper production (Souza et al 2021). Furthermore, successful breeding of diploids and tetraploids in the field will pave the way for triploid breeding and sterile seed production, an attractive possibility for the industry.…”

Section: Ts Souza Et Almentioning

confidence: 99%

Assessment of the cytogenetics and leaf anatomy of synthetic polyploids of Eucalyptus clones

Souza

Macedo

Ferreira

et al. 2023

Crop Breed. Appl. Biotechnol.

Self Cite

View full text Add to dashboard Cite

The induction of polyploidy in Eucalyptus can lead to higher-yielding and more adapted clones, with better wood quality. After artificial polyploidization, it is necessary to certify the effectiveness of the process through cytogenetic analyses and anatomical trait evaluations. Thus, the aim of this study was to certify the chromosome duplication in artificially polyploidized clones of Eucalyptus grandis × Eucalyptus urophylla using cytogenetic analysis, flow cytometry, and leaf anatomy measurements. Chromosomal counts and DNA content estimation allowed the identification of artificially polyploidized clones and mixoploids. Polyploid clones had larger stomata diameter than diploids. The increase in stomata size was accompanied by lower stomatal density in most polyploid clones. The typical gigas effect of polyploidized plants was demonstrated by the expressive increase in leaf area in polyploid individuals compared to diploids. Our findings indicate that the use of polyploidy in Eucalyptus breeding is promising, allowing the discrimination of diploid, tetraploid, and mixoploid plants.

show abstract

“…The response for this effect covers the “omics” (genomic, epigenomic, transcriptomic, and metabolomic), resulting in different yield and composition of secondary metabolites, such as EO 17 . In spite of CSD could enhance EO production, a careful screening and selection still needed among the autopolyploid or allopolyploid germplasms, or both, based on chemical profiling 15 , 18 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Short-term changes related to autotetraploidy in essential oil composition of Eucalyptus benthamii Maiden & Cambage and its applications in different bioassays

Silva

Clarindo

Simiqueli

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Some forest trees have been polyploidized to improve their traits and to supply new germplasms for breeding programs. As trees have a long juvenile stage, the early characterization of the chromosome set doubling effects is crucial for previous selection. Thus, we aimed to characterize the chemical variability of essential oils from diploid and autotetraploid germplasms (autotetraploid A and B) of Eucalyptus benthamii, as well as to evaluate their larvicidal and allelopathic effects. Autotetraploid A showed a higher essential oil yield than diploid and autotetraploid B, which did not differ quantitatively. Aromadendrene, viridiflorol and α-pinene were the major compounds in the diploid essential oil. In contrast, compounds were present in autotetraploids, such as 1,8-cineole, limonene, α-terpineol, and α-terpinyl-acetate. Essential oils from the diploid at 50–200 ppm were twice as larvicidal than those from autotetraploids against Aedes aegypti larvae. Considering the phytotoxicity bioassays using Lactuca sativa, essential oils from both ploidy levels affected root growth. Moreover, the essential oils inhibited shoot growth at all concentrations tested (187.5; 375; 750; 1500; and 3000 ppm). Autotetraploid A and B had the same effect on shoot growth as glyphosate. The essential oils had no cytogenotoxic effect on root meristematic cells of L. sativa, whereas phytotoxic potential was identified mainly in shoot growth. This work demonstrated a dramatic change in secondary metabolism (terpene composition) related to an increase in the ploidy level in Eucalyptus germplasms. In addition, we report the novelty of the chemical composition of essential oils among germplasms and their potential use as larvicidal and post-emergence weed control agents.

show abstract

Polyploidy as a strategy to improve the industrial quality of eucalypt wood

Cited by 5 publications

References 24 publications

Production of Tetraploid Plants from Cotyledons of Diploid Melia volkensii Gürke

Production of Tetraploid Plants from Cotyledons of Diploid Melia volkensii Gürke

Assessment of the cytogenetics and leaf anatomy of synthetic polyploids of Eucalyptus clones

Short-term changes related to autotetraploidy in essential oil composition of Eucalyptus benthamii Maiden & Cambage and its applications in different bioassays

Contact Info

Product

Resources

About