The influence of calcium and pH on growth in primary roots of Zea mays.

     Related Videos
Lipitor Atorvastatin Calcium
Calcium 101 Health Short
  • Calcium 101 Health Short

  • Calcium is important, but it's not made in your body! Where can you get a supply of this mineral?Wat...

Calcium Wave During Fertilization
Calcium - Periodic Table of Videos
Calcium Hydroxide and Zinc Oxide Eugenol Bases

     Related Hubpages

  •  Doc. Url:    Embed Code: 

  • PubMed  status
    (0) (0 Votes)
    Views: (1)   Date: (1988-1-1)   Pages: ()
  • Author:  M L Evans  

  • Abstract:  We investigated the interaction of Ca2+ and pH on root elongation in Zea mays L. cv. B73 x Missouri 17 and cv. Merit. Seedlings were raised to contain high levels of Ca2+ (HC, imbibed and raised in 10 mM CaCl2) or low levels of Ca2+ (LC, imbibed and raised in distilled water). In HC roots, lowering the pH (5 mM MES/Tris) from 6.5 to 4.5 resulted in strong, long-lasting growth promotion. Surprisingly, increasing the pH from 6.5 to 8.5 also resulted in strong growth promotion. In LC roots acidification of the medium (pH 6.5 to 4.5) resulted in transient growth stimulation followed by a gradual decline in the growth rate toward zero. Exposure of LC roots to high pH (pH shift from 6.5 to 8.5) also promoted growth. Addition of EGTA resulted in strong growth promotion in both LC and HC roots. The ability of EGTA to stimulate growth appeared not to be related to H+ release from EGTA upon Ca2+ chelation since, 1) LC roots showed a strong and prolonged response to EGTA, but only a transient response to acid pH, and 2) promotion of growth by EGTA was observed in strongly buffered solutions. We also examined the pH dependence of the release of 45Ca2+ from roots of 3-day-old seedlings grown from grains imbibed in 45Ca2+. Release of 45Ca2+ from the root into agar blocks placed on the root surface was greater the more acidic the pH of the blocks. The results indicate that Ca2+ may be necessary for the acid growth response in roots.

     Related Documents

         Related Groups

           Related Science News

             More on Sciencestage

             Answers

               News

               Related on Youtube Results
        • Watch Again: Cameron & Miliband - The Battle For Number 10
          Watch Again: Cameron & Miliband - The Battle For Number 10 David Cameron and Ed Miliband faced tough questions from Jeremy Paxman and a live studio audience moderated by Kay Burley. Watch the full Q&A sessions again in full. SUBSCRIBE to our ... From: Sky News Views: 53629 3779 ratings Time: 02:17:02 More in News & Politics
        • Apple Byte - Expect the new Apple TV at WWDC 2015
          Apple Byte - Expect the new Apple TV at WWDC 2015 Reports point to a a brand new Apple TV in June; we take a look at an Apple Drone concept; and the App of the Week is Memoji Keyboard. Plus, our Mophie giveaway winners! From: CNET Views: 5658 426 ratings Time: 05:28 More in Science & Technology
        • The Debate - Saudi invasion of Yemen (P.1)
          The Debate - Saudi invasion of Yemen (P.1) Part 1: http://youtu.be/aQvMlMAQCtI Part 2: http://youtu.be/_4i46OvOs_M The bombs fell with no warning in the early hours of Thursday as Yemenis slept in their beds. The Saudi-led invasion... From: PressTV News Videos Views: 305 16 ratings Time: 12:36 More in News & Politics
        • Q. Will You Do A Deal With The SNP?
          Q. Will You Do A Deal With The SNP? Ed Miliband hits back at Jeremy Paxman over Alex Salmond. From: Sky News Views: 98 0 ratings Time: 00:45 More in Sports
        • Q: Would The Conservatives Reverse Cutbacks To The Police Service?
          Q: Would The Conservatives Reverse Cutbacks To The Police Service? Cameron says "there is more we need to do using modern technology to make sure crime falls under this government and if we do that we should be saving money as well." From: Sky News Views: 42 0 ratings Time: 01:49 More in Sports
        • The Voice 2015 - Get The Voice Look: Rock Hair (Featuring Sugar Joans)
          The Voice 2015 - Get The Voice Look: Rock Hair (Featuring Sugar Joans) The Voice's key hairstylist Shawn Finch demonstrates how to achieve rock-star hair on Season 7 finalist Sugar Joans. » Get The Voice Official App: http://bit.ly/TheVoiceApp » Subscribe to... From: The Voice Views: 4317 88 ratings Time: 02:08 More in Music
        • America Answers: Changing the Menu
          America Answers: Changing the Menu On March 26, The Washington Post will take a deep dive into food and wellness, and look at how community and business leaders, innovators in government and at the White House, chefs, artists... From: Washington Post Views: 235 3 ratings Time: 09:07:52 More in News & Politics
        • A Conversation with President Obama and The Wire Creator David Simon
          A Conversation with President Obama and The Wire Creator David Simon President Barack Obama and David Simon, the creator of HBO's The Wire, sat down to talk honestly about the challenges law enforcement face and the consequences communities bear from the war... From: The White House Views: 40977 662 ratings Time: 12:18 More in News & Politics
        • The Bergdahl Swap: What They Aren't Telling You!
          The Bergdahl Swap: What They Aren't Telling You! Infowars Reporter Joe Biggs Discusses the Blatant lies by the Obama Administration to Swap A deserter for 5 Taliban Leaders Help us spread the word about the liberty movement, we're reaching... From: The Alex Jones Channel Views: 6774 183 ratings Time: 06:44 More in News & Politics
        • THE EMOJI TAG/CHALLENGE
          THE EMOJI TAG/CHALLENGE the emoji tag/challenge. please thumbs up!! can we get 60000 likes?! PREVIOUS VIDEO: https://www.youtube.com/watch?v=DH5qXDh1GuE Check out the Monster High music video with me, Megan ... From: Ricky Dillon Views: 91104 16643 ratings Time: 08:32 More in Comedy
        • The Young Turks - Live Show 6pm-8pm 3.26-30.15
          The Young Turks - Live Show 6pm-8pm 3.26-30.15 Download audio and video of the full two hour show on-demand + the members-only post game show by becoming a member at http://www.tytnetwork.com/member-options/. Your membership supports ... From: The Young Turks Views: 22412 379 ratings Time: 00:00 More in News & Politics
        • Christopher Plummer Turned Down The Role Of Gandalf - CONAN on TBS
          Christopher Plummer Turned Down The Role Of Gandalf - CONAN on TBS Christopher regrets not playing the iconic "Lord Of The Rings" wizard, and has a few words for Sir Ian McKellen. More CONAN @ http://teamcoco.com/video Team Coco is the official YouTube channel... From: Team Coco Views: 27497 969 ratings Time: 03:02 More in Comedy
        • Emphasis Added: The Media and The Islamic State
          Emphasis Added: The Media and The Islamic State Emphasis Added on VICE News brings together a group of journalists, academics and other smart folks to argue about the role the media play in actually effecting the outcome of the stories they... From: VICE News Views: 24170 468 ratings Time: 53:09 More in News & Politics
        • WW3 (The Ship: Murder Party)
          WW3 (The Ship: Murder Party) Enjoy the video? Subscribe! ▻ http://bit.ly/SubToSeaNanners What is The Ship: Murder Party? "The Ship: Murder Party is a first-person shooter PC game developed by Outerlight using Valve... From: SeaNanners Gaming Channel Views: 445785 18203 ratings Time: 02:57 More in Gaming
        • The Morning After Routine!
          The Morning After Routine! buy my debut album "Fat Chicks" on itunes! https://itun.es/ca/GIMg6 ************************************************** SUBSCRIBE TO MY VLOGGING CHANNEL!!!!!!!!!! http://www.youtube.com/TrishasLif... From: blndsundoll4mj Views: 3740 4624 ratings Time: 04:43 More in People & Blogs
        • Veterans Know The Govt Has Been Hijacked
          Veterans Know The Govt Has Been Hijacked Frank, a veteran from NC and Tom From PA, talk about the vets know the govt has been hijacked by foreign usurpers. On Sept. 30, the U.S. Army unceremoniously stood up a new headquarters—the... From: The Alex Jones Channel Views: 8878 206 ratings Time: 06:23 More in Nonprofits & Activism
        • Unboxing the Samsung Galaxy S6 and Galaxy S6 Edge
          Unboxing the Samsung Galaxy S6 and Galaxy S6 Edge The Samsung Galaxy S6 and Galaxy S6 Edge just arrived at PCMag Labs. While we put them through their paces for our full review, here's a quick look at what's in the box for both phones. From: PCMag Views: 2365 28 ratings Time: 01:36 More in Science & Technology
        • Benedict Cumberbatch reads the poem 'Richard' at the Richard III reburial service | Channel 4
          Benedict Cumberbatch reads the poem 'Richard' at the Richard III reburial service | Channel 4 Actor Benedict Cumberbatch reads a poem by Poet Laureate Carol Ann Duffy at the Richard III reburial service. Find out more and watch videos from the Richard III reburial service here: http://www.c... From: Channel 4 Views: 23952 280 ratings Time: 02:03 More in Entertainment
        • Why The Ocean Can’t Fix The Drought
          Why The Ocean Can’t Fix The Drought California's drought is bad. Really bad. If we could take salt out of ocean water, could that fix the problem? Follow Julian on Twitter: https://twitter.com/jhug00 Read More: Desalination... From: DNews Views: 42010 1820 ratings Time: 02:54 More in Science & Technology
        • Teen shoots dead 6-year-old brother and kills himself, Florida
          Teen shoots dead 6-year-old brother and kills himself, Florida In Florida a boy of six has been shot dead by his 13-year-old brother who then killed himself after an argument over food. The teenager also shot his older brother. The 16-year-old was wounded... From: euronews (in English) Views: 273 9 ratings Time: 01:11 More in News & Politics
        • Mitt Romney's Grandson Is Training Him for His Evander Holyfield Fight
          Mitt Romney's Grandson Is Training Him for His Evander Holyfield Fight Mitt Romney's trainer might be small, but he's very tough. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights... From: The Tonight Show Starring Jimmy Fallon Views: 123501 2026 ratings Time: 03:04 More in Comedy
        • Watch the official Reveal of the Pulsar RS200 - Leave Track Racing to Amateurs
          Watch the official Reveal of the Pulsar RS200 - Leave Track Racing to Amateurs Pulsar RS200 racing now!​ It's the fastest Pulsar yet. Pulsar RS200, is racing now! Leave track racing to amateurs. Take a look http://bit.ly/RS200Launch. From: pulsarmaniacs Views: 16905 157 ratings Time: 02:06 More in Autos & Vehicles
        • The New BABYSITTER! - March 25, 2015 - ItsJudysLife Vlogs
          The New BABYSITTER! - March 25, 2015 - ItsJudysLife Vlogs Miya and Keira's BIRTHDAY HAUL! https://www.youtube.com/watch?v=W45mO-ehoX4 Yesterday's Vlog https://www.youtube.com/watch?v=zitI44VmT-0&list=UUK2ACorzpH-igxuHZ2ObCEA Wedding ... From: itsJudysLife Views: 161751 7225 ratings Time: 14:44 More in People & Blogs
        • The Virtual Minute - This Is Only a Test #294 - 3/26/2015
          The Virtual Minute - This Is Only a Test #294 - 3/26/2015 This week, Will, Norm, and Jeremy discuss the latest in virtual reality news, YouTube's Twitch competitor, Fantastical 2's high price, the PS4 update that adds suspend and resume, and that... From: Tested Views: 12114 176 ratings Time: 01:33:06 More in Science & Technology
        • Non-stop 100: March 26th, 2015 | 9 AM
          Non-stop 100: March 26th, 2015 | 9 AM Right from the awaited semi finals of the ICC Cricket World Cup 2015 to the ongoing 'War Of Letters' in Aam Aadmi Party to other latest stories from the world of news, watch top 100 news headlines... From: Aaj Tak Views: 904 7 ratings Time: 14:21 More in News & Politics

        •      Related on Wikipedia




























           

          Powered free by PHPmotion