Genetic Control of Glandular Trichome Development

Chalvin, Camille; Drevensek, Stéphanie; Dron, Michel; Bendahmane, Abdelhafid; Boualem, Adnane

doi:10.1016/j.tplants.2019.12.025

Cited by 101 publications

(87 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The recent years have seen a growing interest in harnessing trichomes as either a biotechnological platform for the production of valuable metabolites (Huchelmann et al , 2017) or as an alternative, natural source of resistance to multiple biotic and abiotic stressors in crops (Glas et al , 2012; Oksanen, 2018). However, some gaps in basic knowledge need to be resolved before trichome manipulation can be deployed as a breeding tool (Schuurink and Tissier, 2019; Chalvin et al , 2020). Among others, an important question refers to the ecophysiological trade-off between advantages and disadvantages of increasing trichome density in crops (Bickford, 2016).…”

Section: Discussionmentioning

confidence: 99%

TheLanatatrichome mutation increases stomatal conductance and reduces leaf temperature in tomato

Gasparini

Souto

Silva

et al. 2020

Preprint

View full text Add to dashboard Cite

Background and aimsTrichomes are epidermal structures with an enormous variety of ecological functions and economic applications. Glandular trichomes produce a rich repertoire of secondary metabolites, whereas non-glandular trichomes create a physical barrier against biotic and abiotic stressors. Intense research is underway to understand trichome development and function and enable breeding of more resilient crops. However, little is known on how enhanced trichome density would impinge on leaf photosynthesis, gas exchange and energy balance.MethodsPrevious work has compared multiple species differing in trichome density, instead here we analyzed monogenic trichome mutants in a single tomato genetic background (cv. Micro-Tom). We determined growth parameters, leaf spectral properties, gas exchange and leaf temperature in the hairs absent (h), Lanata (Ln) and Woolly (Wo) trichome mutants.Key resultsShoot dry mass, leaf area, leaf spectral properties and cuticular conductance were not affected by the mutations. However, the Ln mutant showed increased carbon assimilation (A) possibly associated with higher stomatal conductance (gs), since there were no differences in stomatal density or stomatal index between genotypes. Leaf temperature was furthermore reduced in Ln in the early hours of the afternoon.ConclusionsWe show that a single monogenic mutation can increase glandular trichome density, a desirable trait for crop breeding, whilst concomitantly improving leaf gas exchange and reducing leaf temperature.HIGHLIGHTA monogenic mutation in tomato increases trichome density and optimizes gas exchange and leaf temperature

show abstract

Section: Discussionmentioning

confidence: 99%

TheLanatatrichome mutation increases stomatal conductance and reduces leaf temperature in tomato

Gasparini

Souto

Silva

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…It is known that the cytoskeleton, DNA replication and cell wall biosynthesis are important in these cellular behaviors [40,[44][45][46]. These processes are also essential in trichome morphogenesis [47][48][49]. Morphological analysis of eggplant prickles revealed that cells in developing prickles proliferate rapidly, and cells in matured prickles stop dividing and undergo lignification.…”

Section: Key Genes and Pathways Involved In Prickle Developmentmentioning

confidence: 99%

Comparative Transcriptome Analysis Reveals Key Genes and Pathways Involved in Prickle Development in Eggplant

Zhang

Sun

et al. 2021

Genes

View full text Add to dashboard Cite

Eggplant is one of the most important vegetables worldwide. Prickles on the leaves, stems and fruit calyxes of eggplant may cause difficulties during cultivation, harvesting and transportation, and therefore is an undesirable agronomic trait. However, limited knowledge about molecular mechanisms of prickle morphogenesis has hindered the genetic improvement of eggplant. In this study, we performed the phenotypic characterization and transcriptome analysis on prickly and prickleless eggplant genotypes to understand prickle development at the morphological and molecular levels. Morphological analysis revealed that eggplant prickles were multicellular, lignified and layered organs. Comparative transcriptome analysis identified key pathways and hub genes involved in the cell cycle as well as flavonoid biosynthetic, photosynthetic, and hormone metabolic processes during prickle development. Interestingly, genes associated with flavonoid biosynthesis were up-regulated in developing prickles, and genes associated with photosynthesis were down-regulated in developing and matured prickles. It was also noteworthy that several development-related transcription factors such as bHLH, C2H2, MYB, TCP and WRKY were specifically down- or up-regulated in developing prickles. Furthermore, four genes were found to be differentially expressed within the Pl locus interval. This study provides new insights into the regulatory molecular mechanisms underlying prickle morphogenesis in eggplant, and the genes identified might be exploited in breeding programs to develop prickleless eggplant cultivars.

show abstract

“…S11). The members from the MYB, WRKY, bZIP, bHLH and ERF TF families were considered key regulators of trichome development and artemisinin biosynthesis (Doroshkov et al ., 2019; Chalvin et al ., 2020; Hassani et al ., 2020). As shown in Dataset S2 and Fig.…”

Section: Resultsmentioning

confidence: 99%

Discovery and modulation of diterpenoid metabolism improves glandular trichome formation, artemisinin production and stress resilience in Artemisia annua

Chen¹,

Bu²,

Ren³

et al. 2021

New Phytologist

View full text Add to dashboard Cite

Summary Plants synthesize diverse diterpenoids with numerous functions in organ development and stress resistance. However, the role of diterpenoids in glandular trichome (GT) development and GT‐localized biosynthesis in plants remains unknown. Here, the identification of 10 diterpene synthases (diTPSs) revealed the diversity of diterpenoid biosynthesis in Artemisia annua. Protein–protein interactions (PPIs) between AaKSL1 and AaCPS2 in the plastids highlighted their potential functions in modulating metabolic flux to gibberellins (GAs) or ent‐isopimara‐7,15‐diene‐derived metabolites (IDMs) through metabolic engineering. A phenotypic analysis of transgenic plants suggested a complex repertoire of diterpenoids in Artemisia annua with important roles in GT formation, artemisinin accumulation and stress resilience. Metabolic engineering of diterpenoids simultaneously increased the artemisinin yield and stress resistance. Transcriptome and metabolic profiling suggested that bioactive GA4/GA1 promote GT formation. Collectively, these results expand our knowledge of diterpenoids and show the potential of diterpenoids to simultaneously improve both the GT‐localized metabolite yield and stress resistance, in planta.

show abstract

Genetic Control of Glandular Trichome Development

Cited by 101 publications

References 68 publications

TheLanatatrichome mutation increases stomatal conductance and reduces leaf temperature in tomato

TheLanatatrichome mutation increases stomatal conductance and reduces leaf temperature in tomato

Comparative Transcriptome Analysis Reveals Key Genes and Pathways Involved in Prickle Development in Eggplant

Discovery and modulation of diterpenoid metabolism improves glandular trichome formation, artemisinin production and stress resilience in Artemisia annua

Contact Info

Product

Resources

About