Chromosome endoreduplication as a factor of salt adaptation in Sorghum bicolor
Summary. Nuclear DNA amounts were measured by Feulgen cytophotometry in Sorghum bicolor cv. 610 plants early exposed to 150 mM NaCl, a treatment known to induce an increased tolerance to salinity in plants carrying this genotype. In salt-treated plants, the percentages of 8C, 16C, and 32C nuclei in roots in the primary state of growth were 21.9%, 13.3%, and 4.3%, respectively. By contrast, in nonsalinized plants, only 3.5% of the nuclei had an 8C content and no higher DNA contents were observed. The salt treatment induced chromosome endoreduplication during the differentiation of cells in the root cortex, where 41.2% of the cells displayed a DNA content higher than 4C (versus 1.3% in control plants). No enhancement of endopolyploidy was observed in cells of the root vascular cylinder or the leaves of the salt-treated plants. In another S. bicolor genotype (DK 34-Alabama), noncompetent for salt adaptation, the same NaCl treatment did not induce chromosome endoreduplication in root cortex cells. Endopolyploidy may be considered as a part of the adaptive response of S. bicolor competent genotypes to salinity..
Medienart: |
Artikel |
---|
Erscheinungsjahr: |
2006 |
---|---|
Erschienen: |
2006 |
Enthalten in: |
Zur Gesamtaufnahme - volume:227 |
---|---|
Enthalten in: |
Protoplasma - 227(2006), 2-4 vom: Mai, Seite 113-118 |
Sprache: |
Englisch |
---|
Beteiligte Personen: |
Ceccarelli, M. [VerfasserIn] |
---|
Links: |
Volltext [lizenzpflichtig] |
---|
Anmerkungen: |
© Springer-Verlag 2006 |
---|
doi: |
10.1007/s00709-005-0144-0 |
---|
funding: |
|
---|---|
Förderinstitution / Projekttitel: |
|
PPN (Katalog-ID): |
OLC2052229914 |
---|
LEADER | 01000caa a22002652 4500 | ||
---|---|---|---|
001 | OLC2052229914 | ||
003 | DE-627 | ||
005 | 20230516101257.0 | ||
007 | tu | ||
008 | 200820s2006 xx ||||| 00| ||eng c | ||
024 | 7 | |a 10.1007/s00709-005-0144-0 |2 doi | |
035 | |a (DE-627)OLC2052229914 | ||
035 | |a (DE-He213)s00709-005-0144-0-p | ||
040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
041 | |a eng | ||
082 | 0 | 4 | |a 570 |q VZ |
084 | |a 12 |2 ssgn | ||
084 | |a BIODIV |q DE-30 |2 fid | ||
100 | 1 | |a Ceccarelli, M. |e verfasserin |4 aut | |
245 | 1 | 0 | |a Chromosome endoreduplication as a factor of salt adaptation in Sorghum bicolor |
264 | 1 | |c 2006 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
338 | |a Band |b nc |2 rdacarrier | ||
500 | |a © Springer-Verlag 2006 | ||
520 | |a Summary. Nuclear DNA amounts were measured by Feulgen cytophotometry in Sorghum bicolor cv. 610 plants early exposed to 150 mM NaCl, a treatment known to induce an increased tolerance to salinity in plants carrying this genotype. In salt-treated plants, the percentages of 8C, 16C, and 32C nuclei in roots in the primary state of growth were 21.9%, 13.3%, and 4.3%, respectively. By contrast, in nonsalinized plants, only 3.5% of the nuclei had an 8C content and no higher DNA contents were observed. The salt treatment induced chromosome endoreduplication during the differentiation of cells in the root cortex, where 41.2% of the cells displayed a DNA content higher than 4C (versus 1.3% in control plants). No enhancement of endopolyploidy was observed in cells of the root vascular cylinder or the leaves of the salt-treated plants. In another S. bicolor genotype (DK 34-Alabama), noncompetent for salt adaptation, the same NaCl treatment did not induce chromosome endoreduplication in root cortex cells. Endopolyploidy may be considered as a part of the adaptive response of S. bicolor competent genotypes to salinity. | ||
700 | 1 | |a Santantonio, E. |4 aut | |
700 | 1 | |a Marmottini, F. |4 aut | |
700 | 1 | |a Amzallag, G. N. |4 aut | |
700 | 1 | |a Cionini, P. G. |4 aut | |
773 | 0 | 8 | |i Enthalten in |t Protoplasma |d Springer-Verlag, 1926 |g 227(2006), 2-4 vom: Mai, Seite 113-118 |w (DE-627)129304174 |w (DE-600)123809-7 |w (DE-576)014498987 |x 0033-183X |7 nnns |
773 | 1 | 8 | |g volume:227 |g year:2006 |g number:2-4 |g month:05 |g pages:113-118 |
856 | 4 | 1 | |u https://doi.org/10.1007/s00709-005-0144-0 |z lizenzpflichtig |3 Volltext |
912 | |a GBV_USEFLAG_A | ||
912 | |a SYSFLAG_A | ||
912 | |a GBV_OLC | ||
912 | |a FID-BIODIV | ||
912 | |a SSG-OLC-PHA | ||
912 | |a SSG-OLC-DE-84 | ||
912 | |a SSG-OPC-FOR | ||
912 | |a GBV_ILN_22 | ||
912 | |a GBV_ILN_31 | ||
912 | |a GBV_ILN_40 | ||
912 | |a GBV_ILN_211 | ||
912 | |a GBV_ILN_2004 | ||
912 | |a GBV_ILN_4012 | ||
912 | |a GBV_ILN_4082 | ||
912 | |a GBV_ILN_4219 | ||
951 | |a AR | ||
952 | |d 227 |j 2006 |e 2-4 |c 05 |h 113-118 |