Leaf epicuticular wax and glaucousness in Altai wildrye grass: which trait is most important to water status?

Jefferson, P. G.

doi:10.4141/cjps07158

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…However, it should be noted that not all studies demonstrated a correlation between reduced water loss and increased wax accumulation, e.g. in alfalfa (Jefferson et al., 2010 ) and wildrye (Jefferson, 2008 ). It is also interesting that barley mutants with reduced wax cover were able to grow under limited water conditions (Weidenbach et al., 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Correlation between leaf epicuticular wax composition and structure, physio‐biochemical traits and drought resistance in glaucous and non‐glaucous near‐isogenic lines of rye

et al. 2021

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SUMMARY 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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Section: Discussionmentioning

confidence: 99%

Correlation between leaf epicuticular wax composition and structure, physio‐biochemical traits and drought resistance in glaucous and non‐glaucous near‐isogenic lines of rye

et al. 2021

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“…Glaucous EW is associated with high concentrations of β-diketones, C 29 and C 31 hydrocarbons, primary alcohols, triterpene ketones, and esters within the EW hydrocarbon matrix [7][8][9]. In xeric or semiarid plants, the glaucous EW improve water status under drought stress conditions [10].…”

Section: Introductionmentioning

confidence: 99%

Mapping the glaucousness suppressor Iw1 from wild emmer wheat “PI 481521”

Yuan

Wang

et al. 2015

The Crop Journal

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Many species of Triticeae display a glaucous phenotype. In wheat, glaucousness/waxiness on spikes, leaves and shoots is controlled by wax production genes (W loci) and epistatic inhibitors (Iw loci). In this study, a suppressor of glaucousness from wild emmer wheat (Triticum turgidum ssp. dicoccoides) accession "PI 481521" was investigated in a pair of durum (T. turgidum ssp. durum cv. "Langdon", LDN)-wild emmer wheat chromosome substitution lines, LDN and "LDN DIC521-2B ". Genetic analysis revealed that the non-glaucous phenotype of LDN DIC521-2B was controlled by the dominant glaucous suppressor Iw1 on the short arm of chromosome 2B. In total, 371 2B-specific marker differences were identified between LDN and LDN DIC521-2B . The location of the Iw1 gene was mapped using an F 2 population that stemmed from LDN and LDN DIC521-2B , generating a partial linkage map that included 19 simple sequence repeats (SSR) and ten gene-based markers. On the current map, the Iw1 gene was located within the Xgwm614-BE498111 interval, and cosegregated with BQ788707, CD893659, CD927782, CD938589, and Xbarc35. Mapping of Iw1 in LDN DIC521-2B , a publically accessible and widely distributed line, will provide valuable information for marker-assisted selection of the agronomically important trait of glaucousness.

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Assessing leaf senescence in tall fescue (Festuca arundinacea Schreb.) under salinity stress using leaf spectrum

Gao¹,

Li²

2015

Europ.J.Hort.Sci.

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Leaf epicuticular wax and glaucousness in Altai wildrye grass: which trait is most important to water status?

Cited by 4 publications

References 21 publications

Correlation between leaf epicuticular wax composition and structure, physio‐biochemical traits and drought resistance in glaucous and non‐glaucous near‐isogenic lines of rye

Correlation between leaf epicuticular wax composition and structure, physio‐biochemical traits and drought resistance in glaucous and non‐glaucous near‐isogenic lines of rye

Mapping the glaucousness suppressor Iw1 from wild emmer wheat “PI 481521”

Assessing leaf senescence in tall fescue (Festuca arundinacea Schreb.) under salinity stress using leaf spectrum

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