Effect of Leaf Pubescence on Transpiration, Photosynthetic Rate and Seed Yield of Three Near‐Isogenic Lines of Soybeans<sup>1</sup>

Ghorashy, S. R.; Pendleton, J. W.; Bernard, R. L.; Bauer, Marvin E.

doi:10.2135/cropsci1971.0011183x001100030035x

Cited by 26 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Suggested reasons for pubescence include (1) reduced leaf transpiration rates (Ghorashy et al 1971); (2) reduced radiation load (Richards 1996); and (3) promoted water condensation (Konrad et al 2014). Reynolds et al (1999) suggested that leaf hairiness could be an important selection target in breeding drought-resistant wheat.…”

Section: Introductionmentioning

confidence: 99%

Mapping a major QTL for hairy leaf sheath introgressed from Aegilops tauschii and its association with enhanced grain yield in bread wheat

Wan

Yang

et al. 2015

Euphytica

View full text Add to dashboard Cite

Aegilops tauschii, the diploid D genome progenitor of the hexaploid wheat, has been used to improve modern common wheat by creating synthetic hexaploid wheat (SHW) as a bridging mechanism for wheat breeding. Most Ae. tauschii accessions have hairiness on the leaf sheath, whereas the hexaploid common wheat is usually glabrous. In this study a major QTL for leaf sheath hairiness (LSH) was detected on the long arm of chromosome 4D in two recombinant inbred line (RIL) populations produced from SHW-derived cultivar Chuanmai 42. The QTL peak was flanked by markers Xbarc48 and Xbarc1183/ D_GB5Y7FA01AGCKH_224, and explained more than 75 % of the phenotypic variation. The QTL allele for LSH was contributed by Chuanmai 42, and originated from Ae. tauschii. In both RIL populations the QTL allele producing hairy leaf sheath was significantly and positively associated with increased grain yield, grain weight and grain weight per spike. Moreover, most Chuanmai 42-derived cultivars have inherited the hairy leaf sheath character. These findings suggest that the hairy leaf sheath gene in Chuanmai 42 can be applied in marker-assisted selection (MAS) as a morphologically selectable marker in breeding for high yield.Keywords DArT marker Á Leaf sheath hairiness Á QTL mapping Á SNP marker Á Triticum aestivum Á Yield enhancement Hongshen Wan and Yumin Yang have contributed equally to this article.Electronic supplementary material The online version of this article (

show abstract

Section: Introductionmentioning

confidence: 99%

Mapping a major QTL for hairy leaf sheath introgressed from Aegilops tauschii and its association with enhanced grain yield in bread wheat

Wan

Yang

et al. 2015

Euphytica

View full text Add to dashboard Cite

show abstract

“…However, there are several soybean trichome developmental mutants available, including P1 (glabrous), pc (curly pubescence), Pd (dense pubescence), Ps (sparse pubescence), and p2 (puberulent) that are each controlled by a different single Mendelian locus [27]. These mutants have been used to relate the importance of trichome to insect resistance [4,28,29], evapotranspiration [2,30,31] and other yield related characteristics. However, until now, none of these glabrous classical mutations has been studied at the molecular level.…”

Section: Introductionmentioning

confidence: 99%

Transcript profiling reveals expression differences in wild-type and glabrous soybean lines

et al. 2011

View full text Add to dashboard Cite

BackgroundTrichome hairs affect diverse agronomic characters such as seed weight and yield, prevent insect damage and reduce loss of water but their molecular control has not been extensively studied in soybean. Several detailed models for trichome development have been proposed for Arabidopsis thaliana, but their applicability to important crops such as cotton and soybean is not fully known.ResultsTwo high throughput transcript sequencing methods, Digital Gene Expression (DGE) Tag Profiling and RNA-Seq, were used to compare the transcriptional profiles in wild-type (cv. Clark standard, CS) and a mutant (cv. Clark glabrous, i.e., trichomeless or hairless, CG) soybean isoline that carries the dominant P1 allele. DGE data and RNA-Seq data were mapped to the cDNAs (Glyma models) predicted from the reference soybean genome, Williams 82. Extending the model length by 250 bp at both ends resulted in significantly more matches of authentic DGE tags indicating that many of the predicted gene models are prematurely truncated at the 5' and 3' UTRs. The genome-wide comparative study of the transcript profiles of the wild-type versus mutant line revealed a number of differentially expressed genes. One highly-expressed gene, Glyma04g35130, in wild-type soybean was of interest as it has high homology to the cotton gene GhRDL1 gene that has been identified as being involved in cotton fiber initiation and is a member of the BURP protein family. Sequence comparison of Glyma04g35130 among Williams 82 with our sequences derived from CS and CG isolines revealed various SNPs and indels including addition of one nucleotide C in the CG and insertion of ~60 bp in the third exon of CS that causes a frameshift mutation and premature truncation of peptides in both lines as compared to Williams 82.ConclusionAlthough not a candidate for the P1 locus, a BURP family member (Glyma04g35130) from soybean has been shown to be abundantly expressed in the CS line and very weakly expressed in the glabrous CG line. RNA-Seq and DGE data are compared and provide experimental data on the expression of predicted soybean gene models as well as an overview of the genes expressed in young shoot tips of two closely related isolines.

show abstract

“…The principal functions of trichomes include: (1) resistance against herbivories and pathogens by physically interfering with their movement, and by direct toxicity though chemicals (e.g. monoterpenes and sesquiterpenes) produced or released , Tian et al, 2012, (2) protection against UV radiation, maintaining leaf surface temperature and preventing dehydration by increasing reflection, decreasing transpiration and reducing air movement on the leaf surface (Ghorashy et al, 1971, Nielsen et al, 1984, Taheri et al, 2014, (3) secreting secondary metabolites. For examples, glandular trichomes can exude various metabolites that not only repel insects but can also be used by pharmaceutical industry, in pesticides, and as food additives (Glas et al, 2012).…”

Section: Penetration Of Nutrients Through Stomatamentioning

confidence: 99%

“…48, 355-381. Dar, T. A., Uddin, M., Khan, M. M. A., Hakeem, K., Jaleel, H. (2015) Ghorashy, S., Pendleton, J., Bernard, R., Bauer, M. (1971): Effect of leaf pubescence on transpiration, photosynthetic rate and seed yield of three near-isogenic lines of soybeans.…”

Section: Referencesmentioning

confidence: 99%

Absorption and translocation of Zn foliar fertilisers

Cui¹

View full text Add to dashboard Cite

Crop Zn deficiency is associated with low Zn availability in soils and is a widespread problem, also resulting in human Zn deficiency. Foliar Zn fertilisation has been shown to be an efficient approach for overcoming this problem. However, the mechanisms by which Zn moves across the leaf surface (penetration across the cuticle and epidermal cells and into the underlying tissues) and is subsequently translocated remain unclear, with this being the main focus of the present research. Specifically, using ZnSO4 and nano-ZnO, the roles of leaf cuticle, trichomes, and stomata in foliar Zn absorption were examined, with the distribution and the speciation of the absorbed Zn in the leaves determined. In addition, the influence of plant Zn status on foliar Zn absorption was also examined. The first experiment aimed to obtain a general understanding of the effects of leaf properties on the foliar absorption of Zn. Methyl jasmonate (MeJA) (0, 0.1, 0.5, 1, and 2.5 mM) was applied to leaves of soybean (Glycine max), sunflower (Helianthus annuus), and tomato (Solanum lycopersicum) to alter leaf properties. It was found for all three plant species that treating of MeJA caused substantial increases (1.3-3.5-times higher) in leaf trichome density, and the hydrophobicity of the adaxial leaf surface. The changes in stomatal density and leaf cuticle thickness varied with plant species and MeJA concentration. Based upon these results, the second experiment used 0 (control) and 1 mM MeJA treatments to examine the effects of changes in leaf properties on the absorption of foliar-applied Zn, Mn, and Fe, using synchrotron-based X-ray fluorescence microscopy (µ-XRF) to examine the distribution of elements in situ within hydrated leaves. Interestingly, foliar absorption of Zn, Mn, and Fe increased up to 3-to 5-fold in sunflower leaves treated with 1 mM MeJA, but decreased by 0.5-to 0.9-fold in leaves of tomato treated with 1 mM MeJA. It was found that these changes were related to the thickness of the cuticle and epidermal cell wall, suggesting that the cuticle is important for absorption of foliar-applied nutrients. However, subsequent translocation of the absorbed Zn, Mn, and Fe within the leaf tissues was limited (moving < 1.3 mm in 6 h) irrespective of the plant species and treatment. Of the three nutrients, Zn was translocated a greater distance within the vein than in the interveinal tissues (being translocated ca. twofold further). The third experiment gave specific consideration to the role of trichomes in foliar Zn absorption. Using µ-XRF for the in situ analyses of nutrient distribution in leaves of soybean and tomato, it was found that upon the foliar-application of ZnSO4, Zn accumulated in some spectroscopy (XAS) analyses showed that the Zn in the leaves following foliar application was mostly present as Zn phytate (37-53%) in Zn sufficient leaves, but as Zn phosphate (about 55%) in Zn deficient leaves. Across several of the experiments described above, the foliar absorption of ZnSO4 and nano-ZnO were compared. It was found tha...

show abstract

Effect of Leaf Pubescence on Transpiration, Photosynthetic Rate and Seed Yield of Three Near‐Isogenic Lines of Soybeans¹

Cited by 26 publications

References 0 publications

Mapping a major QTL for hairy leaf sheath introgressed from Aegilops tauschii and its association with enhanced grain yield in bread wheat

Mapping a major QTL for hairy leaf sheath introgressed from Aegilops tauschii and its association with enhanced grain yield in bread wheat

Transcript profiling reveals expression differences in wild-type and glabrous soybean lines

Absorption and translocation of Zn foliar fertilisers

Contact Info

Product

Resources

About

Effect of Leaf Pubescence on Transpiration, Photosynthetic Rate and Seed Yield of Three Near‐Isogenic Lines of Soybeans1

Cited by 26 publications

References 0 publications

Mapping a major QTL for hairy leaf sheath introgressed from Aegilops tauschii and its association with enhanced grain yield in bread wheat

Mapping a major QTL for hairy leaf sheath introgressed from Aegilops tauschii and its association with enhanced grain yield in bread wheat

Transcript profiling reveals expression differences in wild-type and glabrous soybean lines

Absorption and translocation of Zn foliar fertilisers

Contact Info

Product

Resources

About

Effect of Leaf Pubescence on Transpiration, Photosynthetic Rate and Seed Yield of Three Near‐Isogenic Lines of Soybeans¹