کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5515417 1541903 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research articleEndopolyploidy levels in barley vary in different root types and significantly decrease under phosphorus deficiency
ترجمه فارسی عنوان
مقدمه: سطوح اندوپپیلوئیدی در جو در انواع مختلف ریشه متفاوت است و به طور معنی داری در کمبود فسفر کاهش می یابد
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
چکیده انگلیسی


- Endopolyploidy levels varied in different types of barley roots.
- Lower endopolyploidy levels in lateral roots were attributed to cortical cells.
- Phosphorus deficiency significantly decreased root endopolyploidy levels in barley.

Increased endopolyploidy is important for plant growth and development as well as for adaptation to environmental stresses. However, little is known about the role of reduced endopolyploidy, especially in root systems. In this report, endopolyploidy variations were examined in different types of barley (Hordeum vulgare L.) roots, and the effects of phosphorus (P) deficiency and salinity (NaCl) stress on root endopolyploidy were also studied. The results showed that the endopolyploidy levels were lower in lateral roots than in either primary or nodal roots. The lower endopolyploidy in lateral roots was attributed to cortical cells. P deficiency reduced the endopolyploidy levels in lateral roots and mature zone of primary roots. By contrast, salinity had no effects on the endopolyploidy levels in either lateral or primary roots, but had a minor effect on nodal roots. Transcript analysis of cell cycle-related genes showed that multiple cell cycle-related genes were more highly expressed in lateral roots than in primary roots, suggesting their roles in lowering endopolyploidy. P deficiency reduced HvCCS52A1 transcripts in the mature zone of primary roots, but had little effect on the transcripts of 12 cell cycle-related genes in lateral roots, suggesting that endopolyploidy regulation differs between lateral roots and primary roots. Our results revealed that endopolyploidy reduction in root systems could be an integrated part of endopolyploidy plasticity in barley growth and development as well as in adaptation to a low P environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 118, September 2017, Pages 11-21
نویسندگان
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