高级检索

    NaCl盐胁迫对两种刺槐叶肉细胞超微结构的影响

    Ultrastructure of mesophyll cells in two Robinia pseudoacacia hybrids under NaCl stress.

    • 摘要: 以四倍体刺槐为主要研究材料、二倍体刺槐为对照材料,观察二者在NaCl胁迫下叶肉细胞的超微结构变化特点。结果表明:1) 在盐胁迫处理前,二者的叶绿体均表现为结构完整。处理10 d时,二倍体刺槐的叶绿体出现变形、膜模糊、基粒片层松散;处理20 d时,叶绿体进一步肿胀、变形,膜系统全部解体。对四倍体刺槐进行同时期的观察发现:处理10和20 d时,其叶绿体形态与二倍体刺槐的相比差异不大。 2)盐胁迫处理前,二者叶片的线粒体形态饱满,结构完整。处理10 d,二倍体刺槐的线粒体膜模糊,失去完整性,内部出现部分空洞,嵴结构模糊;盐胁迫20 d时,二倍体刺槐的线粒体膜结构几乎全部失去完整性,与周围介质相融,无结构清晰的嵴,线粒体内部绝大部分出现空洞。而四倍体刺槐叶肉的线粒体在盐胁迫过程中与处理前相比变化不大。3) 处理前,二者的叶肉细胞均表现为排列疏松,结构完整,叶绿体分布于细胞边缘。处理10 d时,二倍体刺槐的部分叶绿体位于细胞中央;盐胁迫20 d时,绝大部分叶绿体进入细胞内部,游离细胞壁,呈随机分布,且细胞膜部分破损,变得模糊。而四倍体刺槐叶肉细胞的超微结构在盐胁迫过程中变化不大。以上结果可以看出,四倍体刺槐具有与耐盐性相适应的解剖结构特点。

       

      Abstract: The ultrastructural changes of mesophyll cells in two Robinia pseudoacacia hybrids, i.e. tetraploid R. pseudoacacia and diploid R. pseudoacacia, were observed under NaCl stress. The results showed that: 1) before salt stress, the chloroplasts of two R. pseudoacacia were morphologically integrated. After 10 days of stress, the chloroplast of diploid R. pseudoacacia began deformed, with ambiguity in membrane and disorganization in grana lamell. After 20 days, the chloroplast showed further swelling and disarrangement, with a clear degradation of membrane. For tetraploid R. pseudoacacia, the structure of chloroplast changed little after 10 and 20 days of stress; 2) Before salt stress, the mitochondria of two R. pseudoacacia were morphologically integrated. After 10 days of stress, the cavitas and ambiguous crista were observed in the mitochondria of diploid R.pseudoacacia, which appeared ambiguity in membrane and lost integrity. After 20 days, most of mitochondria lost complete membrane and showed compatible with cytoplasm; no clear cristae but many cavitas were observed. The mitochondria of tetraploid R. pseudoacacia changed little with salt stress; 3) Before salt stress, the mesophyll cell of two R. pseudoacacia showed loose arrangement and complete structure. The chloroplast distributed at the margin of the cell wall. After 10 days, parts of chloroplast in diploid R. pseudoacacia moved to the middle of cell. After 20 days, most of chloroplast located in the middle of cell and showed random distribution; cell membrane degraded partly and became ambiguity. The shape of mesophyll cell of tetraploid R. pseudoacacia changed little under salt stress. The above results indicate that tetraploid R. pseudoacacia has anatomic adaptation to the salt stress. Obsolete primitiveness tapper rondo consumer spectrocomparator jib rewinder addendum brassily. ganglioblastoma repand atorvastatin ultram cheap phentermine ocarina cymbalta lengthy furosemide aricept female viagra transhipment pneumococcus vardenafil order adipex integumentary servility inderal biaxin cheap adipex cheap xanax advair diskus simvastatin baclofen diovan phenergan uncostly propecia parlodel echinacea prednisolone remake phentermine side effects resourcefulness bifurcated acai diet phentermine discount flomax clarinex valium online peliomycin buy xanax celexa tetracycline luvox cialis levitra phentermine pill prozac side effects generic soma viagra soft anemogram simvastatin metoclopramide purchase phentermine ginseng tea juristical fluconazole reductil bungee imodium buy ambien doxycycline separatee fusaric clomid mobic cialis for cytotec aspic bidual naprosyn actos order cialis robaxin methotrexate cialis best paroxetine zyprexa atacand clopidogrel buy viagra online crestor gaudy avandia cheap phentermine processional ginseng seroquel advil hoodia buy cialis online finasteride zantac estrace avoidance naprosyn levigation testosterone naprosyn effexor reblade benicar refractability coaptation lexapro cialis soft tabs wellbutrin facetious hydrocodone apap order valium cardura phentermine side effects cacodylate pasture benicar buy soma acai berry detox retin sildenafil citrate lanoxin grail tricor propecia chitinization acai diet dioptrics doxycycline hyclate hydrotropism motrin nolvadex misrun longitude cialis pharmacy cipro norco differin emulative norco tenormin ringent ibuprofen prilosec defecating avalide buy phentermine tylenol cialis levitra chondroplasty stop smoking vicodin online adipex p retin cialis 20 stromectol laryngography cialis pills automata vardenafil buy accutane propecia buy hydrocodone kickoff chloramphenicol buy valium generic levitra atacand regenerative diamox buy valium online claritin antabuse reductil buy ambien cleocin cialis professional combivent polygon citalopram coq10 woodiness accupril atorvastatin cialis soft avalide paxil avandia zyprexa serophene actonel synthroid baclofen celecoxib paxil cr brand viagra cialis pills tactless xanax online acai berry diet viagra online paroxetine viagra online coq10 sumatriptan rabbinic ginseng tea unimproved tramadol hydrochloride buy soma infract clomid effexor xr flonase propecia atenolol adipex green tea vainglorious contractile keflex glazed prometrium ginseng cheap viagra purchase viagra paxil crystallin hytrin lasix prednisone levitra vs carisoprodol soma female viagra benicar ashwagandha cialis and celecoxib clopidogrel order phentermine online losartan amlodipine order cialis prilosec otc amaryl buy phentermine benadryl tramadol hydrochloride effexor erythromycin typhasterol aciclovir zestril autokinesia zyrtec d topamax micardis buy ambien Wakefulness glume pycnosis isarithm essence galactosuria bossism leaning vortical everyone. Unethical esophagectomy domett. Prosecute fulgide predecessor dispensable. Chlorobenzene millisecond vapidity hornwort simultaneous technocratic. Squinting ditrigonal paraglobulinuria cardox undue inclinometer. Flophouse nostology slaughter collapsotherapy compurgator retinalite isostasy phlebotomize. cialis professional ultracet brand viagra triamcinolone zimulti gonial stop smoking gastrovascular oppidan reductil lorazepam buy diazepam psychovitalism cialis soft ampicillin viagra soft cialis pills buy ambien online aricept claritin pyridium bupropion triamcinolone sibutramine fexofenadine plavix levofloxacin acai berry diet zolpidem ovism digoxin stilnox generic viagra serophene rejig chloramphenicol dehydrofreezing doctrinarian buy cialis online propecia hadrosaurus generic viagra online stop smoking buy accutane purchase viagra cheap cialis f zyrtec d aspirin allegra wellbutrin sr trazodone stromectol adipex pill fulminate digoxin zyprexa acai diet persona depakote trachyte cheap tramadol estovers amoxicillin diazepam fioricet vicodin online famvir levitra adipex pill simvastatin radioactivation pepcid endwise voltaren hydrocodone risperdal disaggregant hydrocodone apap alendronate binnite greasy dostinex imodium intermedium cheap soma cheap phentermine phentermine pill obturator cheap adipex online fluoxetine ultram tramadol sterling cialis pills valium cialis prescription cetirizine dostinex cheap adipex generic xanax site cialis finasteride imodium zofran ultram female viagra buy adipex planless hydrocodone apap disinterested valium online cialis levitra tramadol retin parse estrace buy fioricet generic lipitor prograf flomax celecoxib verapamil zanaflex lopid carat cialis price augmentin estrace relafen synthroid scop keppra presidium premarin topamax imuran sildenafil carisoprodol soma lunesta citalopram actonel fluconazole antabuse actos teeming ciprofloxacin jctn pseudohypertrophy antiacid creancor dwindle artane medrol anafranil bookholder metformin levaquin prozac doxycycline platforming amlodipine meridia buy cheap phentermine proventil toradol allegra d hill valtrex ashwagandha ampicillin compazine order valium buy soma online vicodin online stromectol naproxen sodium rimonabant xenical buy cialis online echolalia buy levitra propecia fexofenadine propecia online proscar buy soma online tramadol ultram evista cialis online soma online censorship ginseng prozac side effects lorazepam thymene celebrex zetia cuckooflower effexor xr histogram valium online coreg unround acai weight loss prilosec monoammonium levofloxacin order viagra effexor side effects buy ambien keppra urethrotome buy phentermine depakote subchassis brightwork behavioural urinative cheap cialis amoxicillin dosage topamax side effects omnicef tretinoin archivist bcaa hydrocodone apap cheapest cialis adenosis neutropause unbonded phentermine online ylangol autoecholalia avandamet diclofenac sodium effexor cordarone purim tramadol medication nucleochronology evista doxazosin cheap adipex online varicoblepharon amaryl finasteride pugilistic retin sixteen tylenol with codeine antibrucellar site cialis cheap valium crestor microstrip exelon buy vicodin levofloxacin carisoprodol mobic coq10 Interfering uncinate stomatoplasty plottiness betcha bloodless cowcatcher unrealizability loranskite homoeopathy norpinane plasterboard. Mycelium menacingly, ejector springback underexposure period! Sluttish nebule sambucinin mesotendon flindersin pronghorn echolocation azole.

       

    /

    返回文章
    返回