Functional, histological and biomechanical characterization of wheat water-mutant leaves

Agata Rascio*, Nicoletta Rascio, Michele Rinaldi, Massimiliano Valentini

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

3 اقتباسات (Scopus)


A wheat (Triticum turgidum subsp. durum) mutant, generated with sodium azide from wild-type (WT) cv. 'Trinakria', differs in its water affinity of dry leaves, and was designated as a water-mutant. Compared with the WT, water-mutant leaves have lower rates of water uptake, while stomatal and cuticular transpiration do not differ. The nuclear magnetic resonance proton signals used for image reconstruction of leaf cross sections showed differences between these genotypes for the T1 proton spin-density and the T2 proton spin-spin relaxation time. Structural and histochemical analyses at midrib level showed that the water-mutant has thinner leaves, with more and smaller cells per unit area of mesophyll and sclerenchyma, and has altered staining patterns of lignin and pectin-like substances. Stress-strain curves to examine the rheological properties of the leaves showed a biphasic trend, which reveals that the tensile strength at break load and the elastic modulus of the second phase of the water-mutant are significantly higher than for the WT. These data support the proposal of interrelationships among local biophysical properties of the leaf, the microscopic water structure, the rheological properties and the water flux rate across the leaf. This water-mutant can be used for analysis of the genetic basis of these differences, and for identification of gene(s) that govern these traits.

اللغة الأصليةEnglish
الصفحات (من إلى)210-222
عدد الصفحات13
دوريةPhysiologia Plantarum
مستوى الصوت154
رقم الإصدار2
المعرِّفات الرقمية للأشياء
حالة النشرPublished - يونيو 1 2015
منشور خارجيًانعم

ASJC Scopus subject areas

  • ???subjectarea.asjc.1300.1314???
  • ???subjectarea.asjc.1300.1311???
  • ???subjectarea.asjc.1100.1110???
  • ???subjectarea.asjc.1300.1307???


أدرس بدقة موضوعات البحث “Functional, histological and biomechanical characterization of wheat water-mutant leaves'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا