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Anggarani M, Lin YY, Fang SA, Wu HP, Wu CC, Jane WN, Roscoe TJ, Domergue F, Hsing YIC. Morphology and chemical composition of Taiwan oil millet (Eccoilopus formosanus) epicuticular wax. PLANTA 2024; 259:89. [PMID: 38467941 DOI: 10.1007/s00425-024-04352-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/25/2024] [Indexed: 03/13/2024]
Abstract
MAIN CONCLUSION Taiwan oil millet has two types of epicuticular wax: platelet wax composed primarily of octacosanol and filament wax constituted essentially by the singular compound of octacosanoic acid. Taiwan oil millet (TOM-Eccoilopus formosanus) is an orphan crop cultivated by the Taiwan indigenous people. It has conspicuous white powder covering its leaf sheath indicating abundant epicuticular waxes, that may contribute to its resilience. Here, we characterized the epicuticular wax secretion in TOM leaf blade and leaf sheath using various microscopy techniques, as well as gas chromatography to determine its composition. Two kinds of waxes, platelet and filaments, were secreted in both the leaf blades and sheaths. The platelet wax is secreted ubiquitously by epidermal cells, whereas the filament wax is secreted by a specific cell called epidermal cork cells. The newly developed filament waxes were markedly re-synthesized by the epidermal cork cells through papillae protrusions on the external periclinal cell wall. Ultrastructural images of cork cell revealed the presence of cortical endoplasmic reticulum (ER) tubules along the periphery of plasma membrane (PM) and ER-PM contact sites (EPCS). The predominant wax component was a C28 primary alcohol in leaf blade, and a C28 free fatty acid in the leaf sheath, pseudopetiole and midrib. The wax morphology present in distinct plant organs corresponds to the specific chemical composition: platelet wax composed of alcohols exists mainly in the leaf blade, whereas filament wax constituted mainly by the singular compound C28 free fatty acids is present abundantly in leaf sheath. Our study clarifies the filament wax composition in relation to a previous study in sorghum. Both platelet and filament waxes comprise a protection barrier for TOM.
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Affiliation(s)
- Marita Anggarani
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2 Academia Rd., Nankang, Taipei, 115201, Taiwan
| | - Yu-Ying Lin
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2 Academia Rd., Nankang, Taipei, 115201, Taiwan
| | - Shao-An Fang
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2 Academia Rd., Nankang, Taipei, 115201, Taiwan
| | - Hshin-Ping Wu
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2 Academia Rd., Nankang, Taipei, 115201, Taiwan
| | - Chi-Chih Wu
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2 Academia Rd., Nankang, Taipei, 115201, Taiwan
| | - Wann-Neng Jane
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2 Academia Rd., Nankang, Taipei, 115201, Taiwan
| | - Thomas James Roscoe
- Regulations Epigenetiques et Developpement de la Graine, ERL 5300 CNRS-IRD UMR DIADE, IRD Centre de Montpellier, 911 Avenue Agropolis, 34394, Montpellier, France
| | - Frederic Domergue
- Univ. Bordeaux, CNRS, LBM, UMR 5200, 33140, Villenave d'Ornon, France
| | - Yue-Ie Caroline Hsing
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2 Academia Rd., Nankang, Taipei, 115201, Taiwan.
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2
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Chemelewski R, McKinley BA, Finlayson S, Mullet JE. Epicuticular wax accumulation and regulation of wax pathway gene expression during bioenergy Sorghum stem development. FRONTIERS IN PLANT SCIENCE 2023; 14:1227859. [PMID: 37936930 PMCID: PMC10626490 DOI: 10.3389/fpls.2023.1227859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 09/11/2023] [Indexed: 11/09/2023]
Abstract
Bioenergy sorghum is a drought-tolerant high-biomass C4 grass targeted for production on annual cropland marginal for food crops due primarily to abiotic constraints. To better understand the overall contribution of stem wax to bioenergy sorghum's resilience, the current study characterized sorghum stem cuticular wax loads, composition, morphometrics, wax pathway gene expression and regulation using vegetative phase Wray, R07020, and TX08001 genotypes. Wax loads on sorghum stems (~103-215 µg/cm2) were much higher than Arabidopsis stem and leaf wax loads. Wax on developing sorghum stem internodes was enriched in C28/30 primary alcohols (~65%) while stem wax on fully developed stems was enriched in C28/30 aldehydes (~80%). Scanning Electron Microscopy showed minimal wax on internodes prior to the onset of elongation and that wax tubules first appear associated with cork-silica cell complexes when internode cell elongation is complete. Sorghum homologs of genes involved in wax biosynthesis/transport were differentially expressed in the stem epidermis. Expression of many wax pathway genes (i.e., SbKCS6, SbCER3-1, SbWSD1, SbABCG12, SbABCG11) is low in immature apical internodes then increases at the onset of stem wax accumulation. SbCER4 is expressed relatively early in stem development consistent with accumulation of C28/30 primary alcohols on developing apical internodes. High expression of two SbCER3 homologs in fully elongated internodes is consistent with a role in production of C28/30 aldehydes. Gene regulatory network analysis aided the identification of sorghum homologs of transcription factors that regulate wax biosynthesis (i.e., SbSHN1, SbWRI1/3, SbMYB94/96/30/60, MYS1) and other transcription factors that could regulate and specify expression of the wax pathway in epidermal cells during cuticle development.
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Affiliation(s)
- Robert Chemelewski
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX, United States
| | - Brian A. McKinley
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX, United States
| | - Scott Finlayson
- Department of Soil and Crop Sciences, Texas A&M University, College Station, TX, United States
| | - John E. Mullet
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX, United States
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3
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Yang J, Busta L, Jetter R, Sun Y, Wang T, Zhang W, Ni Y, Guo Y. Diversified chemical profiles of cuticular wax on alpine meadow plants of the Qinghai-Tibet Plateau. PLANTA 2023; 257:74. [PMID: 36879182 DOI: 10.1007/s00425-023-04107-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
The alpine meadow plants showed great intra- and inter-genera variations of chemical profiles of cuticular waxes. Developing an understanding of wax structure-function relationships that will help us tackle global climate change requires a detailed understanding of plant wax chemistry. The goal in this study was to provide a catalog of wax structures, abundances, and compositions on alpine meadow plants. Here, leaf waxes from 33 plant species belonging to 11 families were sampled from alpine meadows of the east side of the Qinghai-Tibet Plateau. Across these species, total wax coverage varied from 2.30 μg cm-2 to 40.70 μg cm-2, showing variation both within as well as between genera and suggesting that wax variation is subject to both environmental and genetic effects. Across all wax samples, more than 140 wax compounds belonging to 13 wax compound classes were identified, including both ubiquitous wax compounds and lineage-specific compounds. Among the ubiquitous compounds (primary alcohols, alkyl esters, aldehydes, alkanes, and fatty acids), chain length profiles across a wide range of species point to key differences in the chain length specificity of alcohol and alkane formation machinery. The lineage-specific wax compound classes (diols, secondary alcohols, lactones, iso-alkanes, alkyl resorcinols, phenylethyl esters, cinnamate esters, alkyl benzoates, and triterpenoids) nearly all consisted of isomers with varying chain lengths or functional group positions, making the diversity of specialized wax compounds immense. The comparison of species relationships between chemical data and genetic data highlighted the importance of inferring phylogenetic relationships from data sets that contain a large number of variables that do not respond to environmental stimuli.
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Affiliation(s)
- Jianfeng Yang
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao, 266109, China
- College of Grassland Science, Qingdao Agricultural University, Qingdao, 266109, China
- College of Animal Science and Technology, Southwest University, Chongqing, 400716, China
| | - Lucas Busta
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, MN, 55812, USA
| | - Reinhard Jetter
- Department of Botany, University of British Columbia, 6270 University Boulevard, Vancouver, BC, V6T 1Z4, Canada
| | - Yingpeng Sun
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao, 266109, China
| | - Tianyu Wang
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao, 266109, China
| | - Wenlan Zhang
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yu Ni
- College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yanjun Guo
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao, 266109, China.
- College of Grassland Science, Qingdao Agricultural University, Qingdao, 266109, China.
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4
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Sperotto F, Yang J, Isom L, Weller C, Ciftci ON. Supercritical carbon dioxide extraction, purification, and characterization of wax from sorghum and sorghum by‐products as an alternative natural wax. J AM OIL CHEM SOC 2022. [DOI: 10.1002/aocs.12575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Felipe Sperotto
- Department of Food Science and Technology University of Nebraska‐Lincoln Lincoln Nebraska USA
| | - Junsi Yang
- Department of Food Science and Technology University of Nebraska‐Lincoln Lincoln Nebraska USA
| | - Loren Isom
- Industrial Agricultural Products Center, Department of Biological Systems Engineering University of Nebraska‐Lincoln Lincoln Nebraska USA
| | - Curtis Weller
- Department of Food Science and Technology University of Nebraska‐Lincoln Lincoln Nebraska USA
| | - Ozan N. Ciftci
- Department of Food Science and Technology University of Nebraska‐Lincoln Lincoln Nebraska USA
- Department of Biological Systems Engineering University of Nebraska‐Lincoln Lincoln Nebraska USA
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Laskoś K, Czyczyło‐Mysza IM, Dziurka M, Noga A, Góralska M, Bartyzel J, Myśków B. Correlation between leaf epicuticular wax composition and structure, physio-biochemical traits and drought resistance in glaucous and non-glaucous near-isogenic lines of rye. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 108:93-119. [PMID: 34288188 PMCID: PMC9291005 DOI: 10.1111/tpj.15428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 05/06/2023]
Abstract
The objective of this research was to investigate the differences between glaucous and non-glaucous near-isogenic lines (NILs) of winter rye (Secale cereale L.) in terms of epicuticular wax layer properties (weight, composition, and crystal morphology), selected physiological and biochemical responses, yield components, above-ground biomass, and plant height under soil drought stress. An important aspect of this analysis was to examine the correlation between the above characteristics. Two different NIL pairs were tested, each consisting of a typical glaucous line and a non-glaucous line with a recessive mutation. The drought experiment was conducted twice (2015-2016). Our study showed that wax accumulation during drought was not correlated with higher leaf hydration and glaucousness. Environmental factors had a large impact on the response of the lines to drought in individual years, both in terms of physiological and biochemical reactions, and the composition of epicuticular leaf wax. The analysed pairs displayed significantly different responses to drought. Demonstration of the correlation between the components of rye leaf wax and the physiological and biochemical parameters of rye NILs is a significant achievement of this work. Interestingly, the study showed a correlation between the wax components and the content of photosynthetic pigments and tocopherols, whose biosynthesis, similarly to the biosynthesis of wax precursors, is mainly located in chloroplasts. This suggests a relationship between wax biosynthesis and plant response to various environmental conditions and drought stress.
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Affiliation(s)
- Kamila Laskoś
- The Franciszek Górski Institute of Plant Physiology Polish Academy of SciencesNiezapominajek 2130‐239Kraków
Poland
| | - Ilona M. Czyczyło‐Mysza
- The Franciszek Górski Institute of Plant Physiology Polish Academy of SciencesNiezapominajek 2130‐239Kraków
Poland
| | - Michał Dziurka
- The Franciszek Górski Institute of Plant Physiology Polish Academy of SciencesNiezapominajek 2130‐239Kraków
Poland
| | - Angelika Noga
- The Franciszek Górski Institute of Plant Physiology Polish Academy of SciencesNiezapominajek 2130‐239Kraków
Poland
| | - Magdalena Góralska
- Department of Plant Genetics, Breeding and BiotechnologyWest‐Pomeranian University of TechnologySłowackiego 1771‐434SzczecinPoland
| | - Jakub Bartyzel
- Department of Applied Nuclear PhysicsFaculty of Physics and Applied Computer ScienceAGH University of Science and TechnologyMickiewicza 330‐059KrakówPoland
| | - Beata Myśków
- Department of Plant Genetics, Breeding and BiotechnologyWest‐Pomeranian University of TechnologySłowackiego 1771‐434SzczecinPoland
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6
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Sanjari S, Shobbar ZS, Ghanati F, Afshari-Behbahanizadeh S, Farajpour M, Jokar M, Khazaei A, Shahbazi M. Molecular, chemical, and physiological analyses of sorghum leaf wax under post-flowering drought stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 159:383-391. [PMID: 33450508 DOI: 10.1016/j.plaphy.2021.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
Wax accumulation on the sorghum surface plays an important role in drought tolerance by preventing non-stomatal water loss. Thereby, the effect of post-flowering drought stress (PFDS) on the epicuticular wax (EW) amount, relative water content (RWC), chlorophyll, and grain yield in sorghum drought contrasting genotypes were investigated. The experiment was conducted as a split-plot based on randomized complete block design (RCBD) with two water treatments (normal watering and water holding after 50% flowering stage), and three genotypes (Kimia and KGS23 as drought-tolerant and Sepideh as drought-susceptible). Scanning electron microscopy and GC-MS analyses were used to determine the wax crystals density and its compositions, respectively. In addition, based on literature reviews and publicly available datasets, six wax biosynthesis drought stress-responsive genes were chosen for expression analysis. The results showed that the amounts of EW and wax crystals density were increased in Kimia and Sepideh genotypes and no changed in KGS23 genotype under drought stress. Chemical compositions of wax were classified into six major groups including alkanes, fatty acids, aldehydes, esters, alcohols, and cyclic compounds. Alkanes increment in drought-tolerant genotypes led to make an effective barrier against the drought stress to control water losses. In addition, the drought-tolerant genotypes had higher levels of RWC compared to the drought-susceptible ones, resulted in higher yield produced under drought condition. According to the results, SbWINL1, FATB, and CER1 genes play important roles in drought-induced wax biosynthesis. The results of the present study revealed a comprehensive view of the wax and its compositions and some involved genes in sorghum under drought stress.
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Affiliation(s)
- Sepideh Sanjari
- Department of Systems Biology, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Zahra-Sadat Shobbar
- Department of Systems Biology, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Faezeh Ghanati
- Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
| | | | - Mostafa Farajpour
- Crop and Horticultural Science Research Department, Mazandaran Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran.
| | - Mojtaba Jokar
- Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Azim Khazaei
- Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Maryam Shahbazi
- Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
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7
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Xiao Y, Li X, Yao L, Xu D, Li Y, Zhang X, Li Z, Xiao Q, Ni Y, Guo Y. Chemical profiles of cuticular waxes on various organs of Sorghum bicolor and their antifungal activities. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 155:596-604. [PMID: 32846395 DOI: 10.1016/j.plaphy.2020.08.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 08/04/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Sorghum bicolor is widely cultivated in arid and semi-arid areas. This paper reports the chemical profiles of cuticular waxes on adaxial and abaxial sides of common leaf, flag leaf, sheath and stem from six sorghum cultivars and the variations of leaf cuticular waxes at seedling, jointing and filling stages. Then, the bioassay of leaf and sheath wax were evaluated against Penicillium sp and Alternaria alternata. The six sorghum cultivars had similar wax profiles. In total, eight wax compounds were identified, including fatty acids, aldehydes, primary alcohols, alkanes, secondary alcohols, ketones, sterols and minor triterpenoids. Leaf wax coverage increased from 2.2 to 3.1 μg/cm2 at seedling stages to 6.5-14.0 μg/cm2 at jointing and filling stages, respectively. The relative abundance of primary alcohols decreased from 51 to 62% at seedling stage to 17-33% at jointing stage whereas alkanes increased from 5-9% to 19-33%. Leaf was dominated with alkanes (28.4%) and aldehydes (28.4%), sheath with acids (42.8%), and stem with aldehydes (80.8%). Epicuticular wax of leaf and sheath contained higher proportions of alkanes whereas the intracuticular waxes contained higher proportions of sterols. The leaf wax improved the growth of Penicillium but reduced that of A. alternaria, whereas sheath wax reduced the growth of Penicillium but unchanged A. alternaria. The detailed sorghum wax profiles improve our understanding of the physiological roles of these waxes and their diversified potential usages in industries.
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Affiliation(s)
- Yu Xiao
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Xiaoting Li
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Luhua Yao
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Daixiang Xu
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Yang Li
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Xuefeng Zhang
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Zhen Li
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Qainlin Xiao
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Yu Ni
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Yanjun Guo
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China.
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8
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Farber C, Wang R, Chemelewski R, Mullet J, Kurouski D. Nanoscale Structural Organization of Plant Epicuticular Wax Probed by Atomic Force Microscope Infrared Spectroscopy. Anal Chem 2019; 91:2472-2479. [PMID: 30624904 DOI: 10.1021/acs.analchem.8b05294] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The cuticle covers external surfaces of plants, protecting them from biotic and abiotic stress factors. Epicuticular wax on the outer surface of the cuticle modifies reflectance and water loss from plant surfaces and has direct and indirect effects on photosynthesis. Variation in epicuticular wax accumulation, composition, and nanoscale structural organization impacts its biological function. Atomic force microscope infrared spectroscopy (AFM-IR) was utilized to investigate the internal and external surfaces of the cuticle of Sorghum bicolor, an important drought-tolerant cereal, forage, and high-biomass crop. AFM-IR revealed striking heterogeneity in chemical composition within and between the surfaces of the cuticle. The wax aggregate crystallinity and distribution of chemical functional groups across the surfaces was also probed and compared. These results, along with the noninvasive nondestructive nature of the method, suggest that AFM-IR can be used to investigate mechanisms of wax deposition and transport of charged molecules through the plant cuticle.
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9
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Harris-Shultz KR, Hayes CM, Knoll JE. Mapping QTLs and Identification of Genes Associated with Drought Resistance in Sorghum. Methods Mol Biol 2019; 1931:11-40. [PMID: 30652280 DOI: 10.1007/978-1-4939-9039-9_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Water limits global agricultural production. Increases in global aridity, a growing human population, and the depletion of aquifers will only increase the scarcity of water for agriculture. Water is essential for plant growth and in areas that are prone to drought, the use of drought-resistant crops is a long-term solution for growing more food for more people with less water. Sorghum is well adapted to hot and dry environments and has been used as a dietary staple for millions of people. Increasing the drought resistance in sorghum hybrids with no impact on yield is a continual objective for sorghum breeders. In this review, we describe the loci, quantitative trait loci (QTLs), or genes that have been identified for traits involved in drought avoidance (water-use efficiency, cuticular wax synthesis, trichome development and morphology, root system architecture) and drought tolerance (compatible solutes, pre- and post-flowering drought tolerance). Many of these identified genes and QTL regions have not been tested in hybrids and the effect of these genes, or their interactions, on yield must be understood in normal and drought-stressed conditions to understand the strength and weaknesses of their utility.
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Affiliation(s)
| | - Chad M Hayes
- Plant Stress and Germplasm Development Research, USDA-ARS, Lubbock, TX, USA
| | - Joseph E Knoll
- Crop Genetics and Breeding Research Unit, USDA-ARS, Tifton, GA, USA
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10
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Uttam GA, Praveen M, Rao YV, Tonapi VA, Madhusudhana R. Molecular mapping and candidate gene analysis of a new epicuticular wax locus in sorghum (Sorghum bicolor L. Moench). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2017; 130:2109-2125. [PMID: 28702690 DOI: 10.1007/s00122-017-2945-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 06/25/2017] [Indexed: 05/12/2023]
Abstract
A new epicuticular wax (bloom) locus has been identified and fine mapped to the 207.89 kb genomic region on chromosome 1. A putative candidate gene, Sobic.001G269200, annotated as GDSL-like lipase/acylhydrolase, is proposed as the most probable candidate gene involved in bloom synthesis/deposition. Deposition of epicuticular wax on plant aerial surface is one strategy that plants adapt to reduce non-transpiration water loss. Epicuticular wax (bloom)-less mutants in sorghum with their glossy phenotypes exhibit changes in the accumulation of epicuticular wax on leaf and culm surfaces. We report molecular mapping of a new sorghum locus, bloomless mutant (bm39), involved in epicuticular wax biosynthesis in sorghum. Inheritance studies involving a profusely bloom parent (BTx623) and a spontaneous bloomless mutant (RS647) indicated that the parents differed in a single gene for bloom synthesis. Bloomless was recessive to bloom deposition. Genetic mapping involving F2 and F7 mapping populations in diverse genetic backgrounds (BTx623 × RS647; 296A × RS647 and 27A × RS647) identified and validated the map location of bm39 to a region of 207.89 kb on chromosome 1. SSR markers, Sblm13 and Sblm16, flanked the bm39 locus to a map interval of 0.3 cM on either side. Nine candidate genes were identified, of which Sobic.001G269200 annotated for GDSL-like lipase/acylhydrolase is the most likely gene associated with epicuticular wax deposition. Gene expression analysis in parents, isogenic lines and sets of near isogenic lines also confirmed the reduced expression of the putative candidate gene. The study opens possibilities for a detailed molecular analysis of the gene, its role in epicuticular wax synthesis and deposition, and may help to understand its function in moisture stress tolerance and insect and pathogen resistance in sorghum.
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Affiliation(s)
- G Anurag Uttam
- Marker-Assisted Selection Laboratory, ICAR-Indian Institute of Millet Research (IIMR), Rajendranagar, Hyderabad, 500 030, India
| | - M Praveen
- Marker-Assisted Selection Laboratory, ICAR-Indian Institute of Millet Research (IIMR), Rajendranagar, Hyderabad, 500 030, India
| | - Y Venkateswara Rao
- Department of Botany, Andhra University, Visakhapatnam, Andhra Pradesh, India
| | - Vilas A Tonapi
- Marker-Assisted Selection Laboratory, ICAR-Indian Institute of Millet Research (IIMR), Rajendranagar, Hyderabad, 500 030, India
| | - R Madhusudhana
- Marker-Assisted Selection Laboratory, ICAR-Indian Institute of Millet Research (IIMR), Rajendranagar, Hyderabad, 500 030, India.
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11
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Hussain MM, Rauf S, Riaz MA, Al-Khayri JM, Monneveux P. Determination of drought tolerance related traits in Helianthus argophyllus, Helianthus annuus, and their hybrids. BREEDING SCIENCE 2017; 67:257-267. [PMID: 28744179 PMCID: PMC5515303 DOI: 10.1270/jsbbs.16095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 03/14/2017] [Indexed: 05/02/2023]
Abstract
Drought is a major constraint for sunflower (Helianthus annuus) production worldwide. Drought tolerance traits have been identified in the related wild species Helianthus argophyllus. This study was initiated to develop sunflower drought-tolerant genotypes by crossing cultivated sunflower with this species and analyze drought tolerance traits in the H. annuus and H. argophyllus populations, H. annuus intraspecific hybrids, and H. annuus × H. argophyllus interspecific hybrids along with the commercial hybrid Hysun-33 under three stress regimes: exogenous application of ABA, both by foliar spray and irrigation, and 5% PEG-induced osmotic stress. H. argophyllus populations had a significantly lower leaf area and higher water-use efficiency and leaf cuticular wax content under all treatments, and maintained a higher net photosynthetic rate and stomatal conductance under osmotic stress. Small leaf area and high cuticular waxes content of the wild species were, however, not inherited in interspecific hybrids which suggested for selection in F2 for these traits. Therefore, transgressive plants were selected in the F2 population to establish F3 plant progenies with silver-leafed canopy of H. argophyllus which showed higher achene yield under stress condition. These results are discussed with a view to using H. argophyllus to improve drought tolerance in cultivated sunflower.
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Affiliation(s)
- Muhammad Mubashar Hussain
- Department of Plant Breeding & Genetics, University College of Agriculture, University of Sargodha,
Pakistan
- Plant Tissue Culture Lab, University College of Agriculture, University of Sargodha,
Pakistan
| | - Saeed Rauf
- Department of Plant Breeding & Genetics, University College of Agriculture, University of Sargodha,
Pakistan
- Plant Tissue Culture Lab, University College of Agriculture, University of Sargodha,
Pakistan
- Corresponding author (e-mail: )
| | - Muhammad Asam Riaz
- Department of Agriculture Entomology, University College of Agriculture, University of Sargodha,
Pakistan
| | - Jameel Muhammad Al-Khayri
- Department of Agricultural Biotechnology, College of Agricultural and Food Sciences, King Faisal University,
Saudi Arabia
| | - Philippe Monneveux
- International Potato Center (CIP),
Avenida La Molina 1895, La Molina, Lima,
Peru
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12
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Thessen AE, Bunker DE, Buttigieg PL, Cooper LD, Dahdul WM, Domisch S, Franz NM, Jaiswal P, Lawrence-Dill CJ, Midford PE, Mungall CJ, Ramírez MJ, Specht CD, Vogt L, Vos RA, Walls RL, White JW, Zhang G, Deans AR, Huala E, Lewis SE, Mabee PM. Emerging semantics to link phenotype and environment. PeerJ 2015; 3:e1470. [PMID: 26713234 PMCID: PMC4690371 DOI: 10.7717/peerj.1470] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 11/12/2015] [Indexed: 11/20/2022] Open
Abstract
Understanding the interplay between environmental conditions and phenotypes is a fundamental goal of biology. Unfortunately, data that include observations on phenotype and environment are highly heterogeneous and thus difficult to find and integrate. One approach that is likely to improve the status quo involves the use of ontologies to standardize and link data about phenotypes and environments. Specifying and linking data through ontologies will allow researchers to increase the scope and flexibility of large-scale analyses aided by modern computing methods. Investments in this area would advance diverse fields such as ecology, phylogenetics, and conservation biology. While several biological ontologies are well-developed, using them to link phenotypes and environments is rare because of gaps in ontological coverage and limits to interoperability among ontologies and disciplines. In this manuscript, we present (1) use cases from diverse disciplines to illustrate questions that could be answered more efficiently using a robust linkage between phenotypes and environments, (2) two proof-of-concept analyses that show the value of linking phenotypes to environments in fishes and amphibians, and (3) two proposed example data models for linking phenotypes and environments using the extensible observation ontology (OBOE) and the Biological Collections Ontology (BCO); these provide a starting point for the development of a data model linking phenotypes and environments.
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Affiliation(s)
- Anne E. Thessen
- Ronin Institute for Independent Scholarship, Monclair, NJ, United States
- The Data Detektiv, Waltham, MA, United States
| | - Daniel E. Bunker
- Department of Biological Sciences, New Jersey Institute of Technology, Newark, NJ, United States
| | - Pier Luigi Buttigieg
- HGF-MPG Group for Deep Sea Ecology and Technology, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar-und Meeresforschung, Bremerhaven, Germany
| | - Laurel D. Cooper
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, United States
| | - Wasila M. Dahdul
- Department of Biology, University of South Dakota, Vermillion, SD, United States
| | - Sami Domisch
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, United States
| | - Nico M. Franz
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Pankaj Jaiswal
- Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, United States
| | - Carolyn J. Lawrence-Dill
- Departments of Genetics, Development and Cell Biology and Agronomy, Iowa State University, Ames, IA, United States
| | | | | | - Martín J. Ramírez
- Division of Arachnology, Museo Argentino de Ciencias Naturales–CONICET, Buenos Aires, Argentina
| | - Chelsea D. Specht
- Departments of Plant and Microbial Biology & Integrative Biology, University of California, Berkeley, CA, United States
| | - Lars Vogt
- Institut für Evolutionsbiologie und Ökologie, Universität Bonn, Bonn, Germany
| | | | - Ramona L. Walls
- iPlant Collaborative, University of Arizona, Tucson, AZ, United States
| | - Jeffrey W. White
- US Arid Land Agricultural Research Center, United States Department of Agriculture—ARS, Maricopa, AZ, United States
| | - Guanyang Zhang
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Andrew R. Deans
- Department of Entomology, Pennsylvania State University, University Park, PA, United States
| | - Eva Huala
- Phoenix Bioinformatics, Redwood City, CA, United States
| | - Suzanna E. Lewis
- Genomics Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Paula M. Mabee
- Department of Biology, University of South Dakota, Vermillion, SD, United States
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13
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Cai D, Chang Z, Wang C, Ren W, Wang Z, Qin P, Tan T. Impact of sweet sorghum cuticular waxes (SSCW) on acetone-butanol-ethanol fermentation using Clostridium acetobutylicum ABE1201. BIORESOURCE TECHNOLOGY 2013; 149:470-473. [PMID: 24140852 DOI: 10.1016/j.biortech.2013.09.122] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 09/12/2013] [Accepted: 09/18/2013] [Indexed: 06/02/2023]
Abstract
The effect of cuticular waxes of sweet sorghum stem on acetone-butanol-ethanol (ABE) fermentation process was investigated. About 22.9% of butanol and 25.4% of ABE were decreased with fermentation period extended when SSCW was added. The inhibition of SSCW militate against both acidogenesis and solventogenesis phase, which were inconsistent with the inhibition of lignocellulose hydrolysate. Further studies on the composition of SSCW were performed. Regulations of inhibition with different carbon chain length of main compositions of SSCW on ABE fermentation were also investigated.
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Affiliation(s)
- Di Cai
- Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China
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14
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Sorghum Physiology. ACTA ACUST UNITED AC 2009. [DOI: 10.1201/9780203022030.ch4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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15
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Burow GB, Franks CD, Acosta-Martinez V, Xin Z. Molecular mapping and characterization of BLMC, a locus for profuse wax (bloom) and enhanced cuticular features of Sorghum (Sorghum bicolor (L.) Moench.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2009; 118:423-31. [PMID: 18985313 DOI: 10.1007/s00122-008-0908-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2008] [Accepted: 09/27/2008] [Indexed: 05/20/2023]
Abstract
Sorghum is distinct from other cereal crops due to its ability to produce profuse amount of epicuticular wax (EW or bloom) on its culm and leaves along with less permeable cuticle which are considered to be important traits contributing to abiotic stress tolerance. Here, we report the molecular mapping and characterization of BL OO M-C UTICLE (BLMC), a locus associated with production of profuse wax, using a mutant mapping population developed from a cross between BTx623 (wild type with profuse wax) and KFS2021 (a mutant with greatly reduced wax). The F2 progenies were genotyped using known and newly developed microsatellite markers to establish a molecular map of BLMC. The locus mapped to a 3.6-centimorgans (cM) interval in the terminal end of sorghum chromosome 10 with flanking markers Xsbarslbk10.47 and Xcup42. Targeted mapping delimited BLMC to as small as 0.7 cM region and facilitated identification of three cosegregating markers with the trait. The BLMC region corresponds to approximately 153,000 bp and candidate genes identified include among others an acyl CoA oxidase (a gene involved in lipid and wax biosynthesis) and seven other putative transcripts. Phenotypic characterization showed that in addition to disrupting the EW production, BLMC mutation reduced culm and leaf cuticle, increased plant death rating in the field at anthesis and significantly reduced the C:28 to C:30 free fatty acid fractions of culm and leaf EW. These results clearly support the important role of BLMC in the expression of profuse wax and enhanced cuticular features of sorghum. Genetic mapping of BLMC opened avenues for identification of genes involved in the cuticle/wax pathway of sorghum and their application for improvement of abiotic stress tolerance.
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Affiliation(s)
- Gloria B Burow
- Plant Stress and Germplasm Development Unit, Cropping Systems Research Laboratory, USDA ARS, 3810 4th Street, Lubbock, TX 79415, USA.
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16
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Chen X, Goodwin SM, Liu X, Chen X, Bressan RA, Jenks MA. Mutation of the RESURRECTION1 locus of Arabidopsis reveals an association of cuticular wax with embryo development. PLANT PHYSIOLOGY 2005; 139:909-19. [PMID: 16183838 PMCID: PMC1256005 DOI: 10.1104/pp.105.066753] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2005] [Revised: 08/11/2005] [Accepted: 08/14/2005] [Indexed: 05/04/2023]
Abstract
Insertional mutagenesis of Arabidopsis (Arabidopsis thaliana) was used to identify a novel recessive mutant, designated resurrection1 (rst1), which possesses a dramatic alteration in its cuticular waxes and produces shrunken nonviable seeds due to arrested embryo development. The RST1 gene sequence associated with these phenotypes was verified by three independent, allelic, insertion mutants, designated rst1-1, rst1-2, and rst1-3, with inserts in the first exon, 12th intron, and fourth exon, respectively. These three rst1 allelic mutants have nearly identical alterations in their wax profiles and embryo development. Compared to wild type, the wax on rst1 inflorescence stems is reduced nearly 60% in total amount, has a proportional reduction in aldehydes and aldehyde metabolites, and has a proportional increase in acids, primary alcohols, and esters. Compared to wild type, the C(29) alkanes on rst1 are nearly 6-fold lower, and the C(30) primary alcohols are 4-fold higher. These results indicate that rst1 causes shunting of most wax precursors away from alkane synthesis and into the primary-alcohol-producing branch of the pathway. In contrast to stems, the wax on rst1 mutant leaves increased roughly 43% in amount relative to the wild type, with the major increase occurring in the C(31) and C(33) alkanes. Unique among known wax mutants, approximately 70% of rst1 seeds are shrunken and nonviable, with these being randomly distributed within both inflorescence and silique. Viable seeds of rst1 are slightly larger than those of wild type, and although the viable rst1 seeds contain more total triacylglycerol-derived fatty acids, the proportions of these fatty acids are not significantly different from wild type. Shrunken seeds contain 34% of the fatty acids of wild-type seeds, with proportionally more palmitic, stearic, and oleic acids, and less of the longer and more desaturated homologs. Histological analysis of aborted rst1 seeds revealed that embryo development terminates at the approximate heart-shaped stage, whereas viable rst1 and wild-type embryos develop similarly. The RST1 gene encodes a predicted 1,841-amino acid novel protein with a molecular mass of 203.6 kD and a theoretical pI of 6.21. The RST1 transcript was found in all tissues examined including leaves, flowers, roots, stems, and siliques, but accumulation levels were not correlated with the degree to which different organs appeared affected by the mutation. The new RST1 gene reveals a novel genetic connection between lipid synthesis and embryo development; however, RST1's exact role is still quite unknown. The degree to which RST1 is associated with lipid signaling in development is an important focus of ongoing studies.
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Affiliation(s)
- Xinbo Chen
- Crop Gene Engineering Key Laboratory of Hunan Province, Hunan Agricultural University, Changsha, China
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17
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Hargrove JL, Greenspan P, Hartle DK. Nutritional significance and metabolism of very long chain fatty alcohols and acids from dietary waxes. Exp Biol Med (Maywood) 2004; 229:215-26. [PMID: 14988513 DOI: 10.1177/153537020422900301] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Very long chain fatty alcohols obtained from plant waxes and beeswax have been reported to lower plasma cholesterol in humans. This review discusses nutritional or regulatory effects produced by wax esters or aliphatic acids and alcohols found in unrefined cereal grains, beeswax, and many plant-derived foods. Reports suggest that 5-20 mg per day of mixed C24-C34 alcohols, including octacosanol and triacontanol, lower low-density lipoprotein (LDL) cholesterol by 21%-29% and raise high-density lipoprotein cholesterol by 8%-15%. Wax esters are hydrolyzed by a bile salt-dependent pancreatic carboxyl esterase, releasing long chain alcohols and fatty acids that are absorbed in the gastrointestinal tract. Studies of fatty alcohol metabolism in fibroblasts suggest that very long chain fatty alcohols, fatty aldehydes, and fatty acids are reversibly inter-converted in a fatty alcohol cycle. The metabolism of these compounds is impaired in several inherited human peroxisomal disorders, including adrenoleukodystrophy and Sjögren-Larsson syndrome. Reports on dietary management of these diseases confirm that very long chain fatty acids (VLCFA) are normal constituents of the human diet and are synthesized endogenously. Concentrations of VLCFA in blood plasma increase during fasting and when children are placed on ketogenic diets to suppress seizures. Existing data support the hypothesis that VLCFA exert regulatory roles in cholesterol metabolism in the peroxisome and also alter LDL uptake and metabolism.
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Affiliation(s)
- James L Hargrove
- Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA.
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18
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Zuther E, Huang S, Jelenska J, Eilenberg H, Arnold EM, Su X, Sirikhachornkit A, Podkowinski J, Zilberstein A, Haselkorn R, Gornicki P. Complex nested promoters control tissue-specific expression of acetyl-CoA carboxylase genes in wheat. Proc Natl Acad Sci U S A 2004; 101:1403-8. [PMID: 14734803 PMCID: PMC337065 DOI: 10.1073/pnas.0307846100] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cis-acting regulatory elements of the wheat acetyl-CoA carboxylase (ACC) gene family were identified by comparing the promoter activity of 5' end gene fragments fused to a reporter gene in two transient expression systems: wheat protoplasts and epidermal cells of mature embryos. Expression of the plastid and the cytosolic ACC genes is each driven by two nested promoters responsible for the synthesis of two transcript types. The internal promoter is located in an intron removed from transcripts originating at the first promoter. These complex promoters, which are different for the cytosolic and plastid ACC genes, control tissue-specific expression of the enzymatic activity supplying cytosolic, plastid, and mitochondrial pools of malonyl-CoA. The activity of one such complex promoter, driving expression of one of the cytosolic ACC genes, was studied throughout development of transgenic wheat plants carrying a full-length promoter-reporter gene fusion. High activity of the promoter was detected in the coleoptile, in the upper sheath section of the leaf, on the top surface of the ovary, in some sections of the main veins in the lemma and glume, and in abaxial epidermis hair cells of the lemma, glume, and rachis. The findings are consistent with the developmental and environmental requirements for very-long-chain fatty acids and flavonoids, whose synthesis begins with the ACC reaction in the cytosol of these specific cell types.
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Affiliation(s)
- E Zuther
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago IL 60637, USA
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19
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Jenks MA, Eigenbrode SD, Lemieux B. Cuticular waxes of Arabidopsis. THE ARABIDOPSIS BOOK 2002; 1:e0016. [PMID: 22303194 PMCID: PMC3243341 DOI: 10.1199/tab.0016] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
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