Exploring the biogeographical diversity of Trichoderma for plant health

Nakkeeran, S.; Marimuthu, T.; Renukadevi, P.; Brindhadevi, S; Jogaiah, Sudisha

doi:10.1016/b978-0-12-822919-4.00024-7

Cited by 8 publications

(4 citation statements)

References 80 publications

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“…Diversity within the genus Trichoderma is evident from the wide range of phenotypes exhibited by the fungi as well as the various ecological roles and industrial purposes the fungi serve (Nakkeeran et al, 2021). Because of their various applications, different Trichoderma species have become model organisms for a broad spectrum of physiological phenomena, such as plant cell wall degradation and enzyme production (Fang et al, 2021), biocontrol (Zin and Badaluddin, 2020), and response to light (Schmoll, 2018).…”

Section: Discussionmentioning

confidence: 99%

Whole-Genome Sequencing and Comparative Genomic Analysis of Potential Biotechnological Strains of Trichoderma harzianum, Trichoderma atroviride, andTrichoderma reesei

Rosolen

Horta

Azevedo

et al. 2022

Preprint

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Fungi of the genus Trichoderma exhibit high genetic diversity and can thus be utilized in a large range of biotechnological applications. While Trichoderma reesei is the primary source of industrial enzymatic cocktails, Trichoderma atroviride and Trichoderma harzianum are widely used as commercial biocontrol agents against plant diseases. Recently, T. harzianum IOC-3844 (Th3844) and T. harzianum CBMAI-0179 (Th0179) demonstrated great potential in the enzymatic conversion of lignocellulose into fermentable sugars. Despite such potential, the genomes of both hydrolytic strains remain unclear. Herein, we performed whole-genome sequencing and assembly of Th3844 and Th0179 strains. To assess the genetic diversity within the genus Trichoderma, the results of both strains were compared with those from T. atroviride CBMAI-00020 (Ta0020) and T. reesei CBMAI-0711 (Tr0711). The resulting assembly revealed a total length of 40 Mb, (Th3844), 39 Mb (Th0179), 36 Mb (Ta0020), and 32 Mb (Tr0711), in which 10,786 (Th3844), 11,322 (Th0179), 10,082 (Ta0020), and 8,796 (Tr0711) genes were predicted. Then, the annotation of the predicted CDS sequences from the evaluated strain genes revealed 413 (Th3844), 413 (Th0179), 377 (Ta0020), and 329 (Tr0711) CAZymes. The orthology analysis revealed 18,349 orthogroups, which encompassed 95% of the total genes, 3,378 orthogroups with all species present, and 408 species-specific orthogroups. A genome-wide phylogenetic analysis modeled from the 1,864 single-copy orthogroups provided details on the relationship of the newly sequenced species with other Trichoderma and with more evolutionarily distant genera. Structural variants revealed genomic rearrangements between Th3844, Th0179, Ta0020, and Tr0711 with the T. reesei QM6a reference genome as well as the functional effects of such variants on the evaluated strains. In conclusion, the findings presented herein allow the genetic diversity of the evaluated strains, including those from the same species, to be viewed, offering opportunities to further explore such fungal genomes in future biotechnological and industrial applications.

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Section: Discussionmentioning

confidence: 99%

Whole-Genome Sequencing and Comparative Genomic Analysis of Potential Biotechnological Strains of Trichoderma harzianum, Trichoderma atroviride, andTrichoderma reesei

Rosolen

Horta

Azevedo

et al. 2022

Preprint

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“…SMP technique proposed by Eastin (1990) involves combination of seed, solid matrix and water to control temperature, oxygen and moisture that affect germination. In this technique, moistened seeds are mixed with insoluble solid matrix/organic carrier and their moisture level is maintained to a level just below seed sprouting (Nakkeeran et al, 2021). During this process, seeds are hydrated enough to begin metabolic process required for germination but prevent radical protrusion (Cumagun, 2014).…”

Section: Factors Effecting Germination Of Vegetable Cropsmentioning

confidence: 99%

Solid Matrix Priming: An Effective Technique Used for Improvement in Seed Emergence, Vigor and Seedling Growth of Vegetable Crops

Manzoor,

Naz,

Naveed

et al. 2023

Plant Health

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Poor crop stand is one of the most common abiotic constrain faced by vegetable growers of developing countries due to production of low quality seed. Multiple factors, especially abiotic stresses and seed dormancy restrict seed germination and seedling growth. Up till now, seed priming is still considered as effective and cheapest method to enhance seed germination and to mitigate the drastic effect of abiotic stresses. Manipulation of seed hydration through solid matrix priming technique not only improves germination characteristics but also stimulates biochemical processes like restoration of metabolic activities through protein and nucleic acid synthesis (RNA and DNA), increases enzymatic activities, and improves the storage of organic substances in germinating seeds. It was also found effective in improving seedling establishment under salinity, drought, and temperature stresses by activating defence mechanisms. Therefore, this review highlights the role of solid matrix priming in improving the germination and stand establishment of vegetable crops under suboptimal conditions.

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“…7 Several priming methods are used to enhance the agro-morphic parameters of crop seeds. Hydropriming involves priming seeds in water 8 ; osmopriming entails the use of an osmoticum 9 ; halopriming involves soaking in salt solutions 10 ; solid-matrix priming involves priming on a solid material 11 ; and hormonal priming, which requires the use of plant growth regulators such as abscisic acid (ABA), 12,13 gibberellic acids (GAs) 5 or salicylic acid (SA). [14][15][16] Biopriming, which involves using microbial products, is a relatively new priming strategy that offers the advantage of environmental friendliness and may also be less expensive than most of the priming methods available.…”

Section: Introductionmentioning

confidence: 99%

Effects of priming duration and concentration of metabolites from rhizosphere bacteria on the germinability of cowpea, soybean, sesame, and okra seeds

Akpor,

Ajinde,

Ogunnusi

2024

F1000Res

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Seed priming enhances germination and growth, which are important determinants of crop yield. This study was carried out to assess the effect of priming duration and metabolite concentration on the priming of five (5) different crops, using the metabolites of five (5) bacterial isolates. The crop seeds were treated in the cold-extracted metabolites of the five isolates at five (5) different priming durations (1, 2, 3, 4, and 5 h) and then in five metabolite concentrations (200, 400, 600, 800, and 1000 mg/L) of the five extracted metabolites at the optimal priming duration determined in the first experiment. Characterization of the cold-extracted metabolites was also carried out using gas-chromatography-mass spectrometry (GC-MS). Results revealed that priming cowpea and soybean for longer durations (< 3 h) could hinder their growth and development. Lower concentrations were observed to be optimal for cowpea and soybean, but for sesame and okra, there was no detectable pattern with metabolite concentration. The GC-MS revealed the presence of some molecules (e.g. hexadecanoic acid) that have shown plant growth promotion potential in other studies. This study showed that seeds with large endosperm, such as, cowpea and soybean, are more prone to the deleterious effects of treatment for longer durations. Further experiments should be carried out to isolate and purify the bioactive moieties for further studies and onward application.

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Exploring the biogeographical diversity of Trichoderma for plant health

Cited by 8 publications

References 80 publications

Whole-Genome Sequencing and Comparative Genomic Analysis of Potential Biotechnological Strains of Trichoderma harzianum, Trichoderma atroviride, andTrichoderma reesei

Whole-Genome Sequencing and Comparative Genomic Analysis of Potential Biotechnological Strains of Trichoderma harzianum, Trichoderma atroviride, andTrichoderma reesei

Solid Matrix Priming: An Effective Technique Used for Improvement in Seed Emergence, Vigor and Seedling Growth of Vegetable Crops

Effects of priming duration and concentration of metabolites from rhizosphere bacteria on the germinability of cowpea, soybean, sesame, and okra seeds

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