Genetic diversity of teak (Tectona grandis L.F.) from different provenances using microsatellite markers

Alcântara, Berenice Kussumoto de; Veasey, Elizabeth Ann

doi:10.1590/s0100-67622013000400018

Cited by 19 publications

(12 citation statements)

References 30 publications

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“…Its desirable hardwood properties, fine grain, and durability have made teak the luxury timber for furniture making, carving, and building around the world [3,4]. Due to its economical importance, teak has been introduced widely in the tropical regions since the 19th century, especially in Asia, Africa, Central America, and South America [5].…”

Section: Introductionmentioning

confidence: 99%

Variation in Photosynthetic Traits and Correlation with Growth in Teak (Tectona grandis Linn.) Clones

Huang

Kunnan

Zaizhi

et al. 2019

Forests

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In order to interpret the patterns of genetic variation of photosynthesis and the relationships with growth traits within gene resources of teak (Tectona grandis Linn.), gas exchange, and chlorophyll fluorescence parameters, growth traits of plants in nursery and field trials were measured for 20 teak clones originated from different countries. The results show that there was abundant genetic variation in gas exchange, chlorophyll fluorescence, and growth among the teak clones. The measured traits were found to have generally high heritability (h2) except for intercellular concentration of carbon dioxide (CO2) (Ci). The net photosynthetic rate (Pn), seedling height, and individual volume of wood were significantly correlated with each other, and seedling height was significantly correlated with plant height in field trials, suggesting that Pn and seedling height can be useful in teak breeding. Teak clones 7029, 71-5, 7219, 7412, and 7122, and provenances 3070, 3074, and 3071 had higher photosynthetic rates, and can be regarded as a key resource in teak improvement programs. This work provides useful information for teak breeding and germplasm resource management.

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Section: Introductionmentioning

confidence: 99%

Variation in Photosynthetic Traits and Correlation with Growth in Teak (Tectona grandis Linn.) Clones

Huang

Kunnan

Zaizhi

et al. 2019

Forests

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“…been few initiatives focusing on these programs for teak (Costa et al, 2007;Schuhli & Paludzyszyn Filho, 2010). This may be the reason for the high variability of productivity, low genetic diversity and the underexplored genetic potential of this species in Brazil (Alcântara & Veasey, 2013;Costa & Resende, 2001;Giustina et al, 2017;Shimizu, Klein, & Oliveira, 2007). Medeiros et al (2015) pointed out that there is an increasing demand in quality and quantity of teak wood in the market, which will push more investments onto the implementation of tree improvement programs in order to produce superior genetic material for clonal propagation and also for improved seeds (Costa et al, 2015;Schuhli & Paludzyszyn Filho, 2010).…”

Section: Figurementioning

confidence: 99%

Growth and Structural Development of Tectona grandis in Different Cultivation Systems in Brazil

Medeiros¹,

Domiciano²,

Leseux³

et al. 2019

JAS

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The objective of the research was to assess the growth and structural changes of clonal and seed-origin teak trees in monoculture and agroforestry systems. The experiment was established in a randomized complete block design with six replicates. Eight treatments were etablished consisting of combinations of two propagation types (clonal and seed-origin), two types of cultivation systems until the age of 24 months (monoculture and taungya system with maize) and two types of cultivation system after 24 months of age (monoculture and silvopastoral systems). The data were analyzed by modeling the growth and yield, diameter distribution and diameter class ingrowth. The technical age of thinning was then determined by the percent entries method. Independent of the cultivation system, clonal trees presented greater tree height and diameter than seed-origin trees. Regarding the cultivation systems, systems ending in a monoculture phase presented greater tree height and diameter than systems ending in a silvopastoral phase. In terms of structure, represented by the evolution of diameter distribution, seed-origin trees and systems ending in a silvopastural phase resulted in flatter and broader distributions than clonal trees and final monoculture phase. Overall, the technical age of the first thinning varied from 6 to 9 years, being earlier for clonal trees in monoculture and later for seed-origin trees in systems ending in a silvopastoral phase. The slower growth and greater variability in silvopastoral systems with seed-origin teak tree can be attributed to the genetic variability of the trees associated competition with the brachiaria grass, which also made the plants more susceptible to the attack of pests.

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“…Natural populations of teak have been found in Laos, Myanmar, Thailand, Java Islands and India, with a worldwide planted area and natural forest of 33,381 ha (2.5 million m 3 of wood) (Kollert and Cherubini 2012). Unfortunately, despite its importance, there is a lack of genetic studies regarding gene expression and characterization (Alcântara and Veasey 2013;Galeano et al 2014;Galeano et al 2015). Consequently, to obtain CAD members related to lignin biosynthesis in teak, this study amplified, cloned and characterized three partial CAD genes (TgCAD2, TgCAD3 and TgCAD4) and a complete bona fide CAD gene (TgCAD1).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Cinnamyl Alcohol Dehydrogenase gene family in lignifying tissues of Tectona grandis L.f.

2018

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The cinnamyl alcohol dehydrogenase (CAD) enzyme catalyzes the last step of monolignols synthesis in the lignin pathway. Tectona grandis (teak) is a tropical tree with high valuable timber. As there is few genetic information about lignin formation in teak, the purpose of this study is to characterize members of CAD family in this species. As methodology, PCR amplification using cDNA samples, vector cloning, sequencing, bioinformatics analyses and gene expression studies using real time RTqPCR were performed. As results, four members (TgCAD1-TgCAD4) were obtained. Comparative analyses showed that all of them have conserved residues for catalytic zinc action, structural zinc ligation, NADPH binding and substrate specificity, consistent with the mechanism of alcohol dehydrogenases. Phylogenetic analysis showed that TgCADs are present in three main classes and seven groups. Expression analyses revealed that TgCAD1 was highly expressed in leaves and could be related with pathogen defense. TgCAD2 was more expressed in branches and roots. Differently, TgCAD3 and TgCAD4 were highly expressed in juvenile and mature sapwood, suggesting a crucial role in wood development and lignin biosynthesis, with tissue-specialized expression profiles. Furthermore, TgCAD4 could be related with teak maturation for being more expressed in sapwood of mature teak trees. As conclusion, this work is the first to characterize genes of CAD family in Tectona grandis. These genes could be interesting to develop transgenic plants for basic research and field applications.

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Genetic diversity of teak (Tectona grandis L.F.) from different provenances using microsatellite markers

Cited by 19 publications

References 30 publications

Variation in Photosynthetic Traits and Correlation with Growth in Teak (Tectona grandis Linn.) Clones

Variation in Photosynthetic Traits and Correlation with Growth in Teak (Tectona grandis Linn.) Clones

Growth and Structural Development of Tectona grandis in Different Cultivation Systems in Brazil

Characterization of Cinnamyl Alcohol Dehydrogenase gene family in lignifying tissues of Tectona grandis L.f.

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